$B bTl 3bb MAIN LIBRARY raR Main Lib. (pnwmitg of fyalifoMta, No.;.. /J4ty4. Division Range Tvt$ £ Received Qt+***JJ,1874i •qrj niBp^ liversity of California. Oil- "V OF IS 76. Library, Of CUMum*' ^J^y^^rrti) 6^£^ ^^sz^t^-*^ a^U^c^C 2Y THIRD EDITION. V TABLES SHOWING THE Library VALUE OF SILVER AND GOLD, PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS, FOR JJOHH TAYLOB & CO. IMPORTERS OF ASSAYEES' MATEEIALS, Nos. 512 to 618 WASHINGTON STREET, <# * PROPERTIES OF SILVER. /6 4~* 4 Pure Silver is the brightest of metals — of a beautiful white color and rich luster. lis specific gravity is 10.47. It is very malleable, but not so much so as gold. Its melting point is 1860° Fah. When pure it crystallizes readily when slowly cooled. Although it sometimes occurs native, it is generally extracted from ores, which take many complex forms. Much of the silver of commerce is extracted from lead, in the ores of which it is always found in greater or less quantities. Native silver is sometimes found beautifully crystallized, but generally in hairs or threads (wire silver.) Although it is sometimes nearly pure, it is generally alloyed with gold, antimony, arsenic, etc. The atomic weight of silver is 108, and its symbol (Ag.) The alchemists called silver after the moon (Luna), from which the name " Lunar Caustic " is derived. Sil- ver dissolves readily in rather dilute nitric acid, but is scarcely acted upon by hydro- chloric or dilute sulphuric acids. Hydro-sulphuric acid, and sulphide of ammonium precipitate silver from its solu- tions as a black sulphide of silver (AgS.) Boiling nitric acid decomposes this precipi- tate with separation of sulphur. Soda and potassa precipitate from solutions of silver the oxide of that metal, which is insoluble in excess but dissolves in ammonia. Ammonia also precipitates the oxide from neutral solutions, which readily dissolves in excess. Hydrochloric acid and soluble chlorides precipitate silver as a white, curdy chlo- ride of Silver (AgCl) which is insoluble in acids, but dissolves in ammonia, from which it is again precipitated unchanged by acids. By exposure to heat chloride of silver fuses to a transparent horny mass. When this compound is found in nature it is called "Horn Silver." All compounds of silver, when mixed with carbonate of soda, give in the inner flame of the blowpipe, brilliant, white, ductile, metallic globules, which give no incrus- tation in charcoal, unless the heat is too long continued, when a slight red sublimate is formed. By these reactions silver may be distinguished from all other metals. The assay of silver bullion by the cupel is never strictly accurate. The use of proof silver with the assay, or of the tables of correction as computed for that purpose, do not give absolute results, although sufficiently so for practice. Correct assays can only be obtained by the volumetric method. 1 grain of pure silver is worth $0.0026936 1 oz. Troy " " " 1.292929+ 1 pound av. " " " 18.8547+ 1 ton (2000 lbs=29166.6 oz. Troy)= 37709.50 1 cubic inch is worth 7.15 1 cubic foot " 12355.20 We are indebted to Mr. H. G. Hanks, of San Francisco, for the above article on Silver. J. T. fe CO. ISTote to Silver Table. The Table of the Value of Silver is calculated from the basis upon which the value of Silver is computed in the U. S. Mint and its branches, viz: 99 ounces of pure Silver is worth $128.00; or 11 ounces of standard Silver (900 fine) is worth $12 80. Hence, 1 oz. of pure Silver is worth $1.2929. 1 oz. of standard Silver is worth $1.1636. Silver usually commands a Premium, which varies with the supply and demand. TABLE OF THEE VA.EUE OF s I i^irse, n, PER OUNCE TROY, AT ] DIFFERENT ] DEGREES OF FINENESS. mm® fill Vd to 100 fine. r. o 02* g O K 02 a o 0Q H g B 5 CO W < s 9 P a* i O g i o ft 02 H § 5 55 CO a < i-i o p 02 H 55 H 00 00.00 20 02.59 40 05.17 60 07.76 80 10.34 l 00.13 21 02.72 41 05.30 61 07.89 81 10.47 2 00.26 22 02.84 42 05.43 62 08.02 82 10.60 3 00.39 23 02.97 43 05.56 63 08.15 83 10.73 4 00,52 24 03.10 44 05.69 64 08.27 84 10.86 5 00.65 25 03.23 45 05.82 65 08.40 85 10.99 6 00.78 26 03.36 46 05.95 66 08.53 86 11.12 7 00.90 27 03.49 47 06.08 67 08.66 87 11.25 8 01.03 28 03.62 48 06.21 68 08.79 88 11.38 9 01.16 29 03.75 49 06.34 69 08.92 89 11.51 10 01.29 30 03.88 50 06.46 70 09.05 90 11.64 11 01.42 31 04.01 51 06.59 71 09.18 91 11.771 12 01.55 32 04.14 52 06.72 72 09.31 92 11.89 13 01.68 33 04.27 53 06.85 73 09.44 93 12.02 14 01.81 34 04.40 54 06.98 74 09.57 94 12.15 15 01.94 35 04.53 55 07.11 75 09.70 95 12.28 16 02.07 36 04.65 56 07.24 76 09.83 96 12.41 17 02.20 37 04.78 57 07.37 77 09.96 97 12.54 18 02.33 38 04.91 58 07.50 78 10.08 98 12.67 19 02.46 39 05.04 59 07.63 79 10.21 99 12.80 Importers j and Dealers iii ASHAYER8' M:A.T KHIALK, ; 5^i^ £o 5i& Washington Street > /Stow* Francisco • TABLE OF THE VALUE OF m x x.rw m m PER OUNCE TROY, AT DIFFERENT 3 DEGREES OF FINENESS. Pf®pa^©i toip fill tifiii « w> fill WA 300 to 400 fine. 55 CO i g H o ft OB 5 g H W I PI CO i o ft 03 H g s o § CO 9 3 o A cc p g 300 38.79 320 41.37 340 43.96 360 46.55 380 49.13 301 38.92 321 41.50 341 44.09 361 46.67 381 49.26 302 39.05 322 41.63 342 44.22 362 46.80 382 49.39 303 39.18 323 41.76 343 44.35 363 46.93 383 49.52 304 39.30 324 41.89 344 44.48 364 47.06 384 49.65 305 39.43 325 42.02 345 44.61 365 47.19 385 49.78 306 39.56 326 42.15 346 44.74 366 47.32 386 49.91 307 39.69 327 42.28 347 44.86 367 47.45 387 50.04 308 39.82 328 42.41 348 44.99 368 47.58 388 50.17 309 39.95 329 42.54 349 45.12 369 47.71 389 50.29 310 40.08 330 42.67 350 45.25 370 47.84 390 50.42 311 40.21 331 42.80 351 45.38 371 47.97 391 50.55 312 40.34 332 42.93 352 45.51 372 48.10 392 50.68 313 40.47 333 43.05 353 45.64 373 48.23 393 50.81 314 40.60 334 43.18 354 45.77 374 48.36 394 50.94 315 40.73 335 43.31 355 45.90 375 48.48 395 51.07 316 40.86 336 43.44 356 46.03 376 48.61 396 51.20 317 40.98 337 43.57 357 46.16 377 48.74 397 51.33 318 41.11 338 43.70 358 46.29 378 48.87 898 51.46 319 41.24 339 43.83 359 46.42 379 49.00 399 51.59 Importers and Dealers In AWSAYERS' MAT EBIAL^, 512 to 518 Washington Street, San Franciscc >. TABLE OF THE VALUE OE 9 I 1*¥I R PER OUNCE TROY, AT DIFFERENT 3 DEGREES OF FINENESS. Iftpsftl Mmw> itii iiiiti a mm® 400 to 500 fine. I g CO < O a CO* H K H O M ft CD M < & O o CO g ft CO 3 M h) h) O « JO s 5 w i s 03 < o 02 H § 1 g 5 CO < a o a g g o 400 51.72 420 54.30 440 56.89 460 59.47 480 62.06 401 51.85 421 54.43 441 57.02 461 59.60 481 62.19 402 51.98 422 54.56 • 442 57.15 462 59.73 482 62.32 403 52.11 423 54.69 443 57.28 463 59.86 483 62.45 404 52.23 424 54.82 444 57.41 464 59.99 484 62.58 405 52.36 425 54.95 445 57.54 465 60.12 485 62.71 406 52.49 426 55.08 446 57.66 466 60.25 486 62.84 407 52.62 427 55.21 447 57.79 467 60.38 487 62.97 408 52.75 428 55.34 • :448 57.92 468 60.51 488 63.09 409 52.88 429 55.47 449 58.05 469 60.64 489 63.22 410 53.01 430 55.60 450 58.18 470. 60.77 490 63.35 411 53.14 431 55.73 451 58.31 471 60.90 491 63.48 412 53.27 432 55.85 452 58.44 472 61.03 492 63.61 413 53.40 433 56.98 453 58.57 473 61.15 493 63.74 414 53.53 434 56.11 454 58.70 474 61.28 494 63.87 415 53.66 435 56.24 ' 455 58.83 475 61.41 495 64.00 416 53.79 436 56.37 456 58.96 476 61.54 496 64.13 417 53.92 437 56.50 457 59.09 477 61.67 497 64.26 418 54.04 438 56.63 458 59.22 478 61.80 498 64.39 419 54.17 439 i 56.76 459 59.35 479 61.93 499 64.52 Importers and Dealers in ASSAYERS' MATERIALS, 512 to 518 Washington Street, San Francisco, TABLE OF TELE VALUE OF 5 1 X*1F^ It PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. Wwmw^^^ to^* JNMDff fifiil *V CMi« 500 to 600 fine. 1 % 1 Q 02 H 3 O Q 02 EH fc M o H TO 1 OQ ' H fc H o H fc 02 3 a o Q 02 EH § 5 fc B 02 « 3 o Q 00 Eh 500 64.65 520 67.23 540 69.82 560 72.40 580 74.99 501 64.78 521 67.36 541 69.95 561 72.53 581 75.12 502 64.91 522 67.49 542 70.08 562 72.66 582 75.25 503 65.03 523 67.62 543 70.21 563 72.79 583 75.38 504 65.16 524 67.75 544 70.34 564 72.92 584 75.51 505 65.29 525 67.88 545 70.46 565 73.05 585 75.64 506 65.42 526 68.01 546 70.59 566 73.18 586 75.77 507 65.55 527 68.14 547 70.72 567 73.31 587 75.89 508 65.68 528 • 68.27 548 70.85 568 73.44 588 76.02 509 65.81 529 68.40 549 70.98 569 73.56 589 76.15 510 65.94 530 68.53 550 71.11 570 73.69 590 76.28 511 66.07 531 68.65 551 71.24 571 73.82 591 76.41 512 66.20 532 68.78 552 71.37 572 73.95 592 76.54 513 66.33 533 68.91 553 71.50 573 74.08 593 76.67 514 66.46 534 69.04 554 71.63 574 74.21 594 76.80 515 66.59 535 69.17 555 71.76 575 74.34 595 76.93 516 66.72 536 69.30 556 71.89 576 74.47 596 77 06 517 66.84 537 69.43 557 72.02 577 74.60 597 77.19 518 66.97 538 69.56 558 72.15 578 74.73 598 77.32 519 67.10 539 69.69 559 72.27 579 74.86 599 77.45 Importers and Dealers in ASSAYElis MAIKKIAIX 512 to 518 Washington Street, San Francisco. TABLE OF THE VALUE OE m I X- VE R PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. YlMjP&iMd Mmm jkowsm iaii®i «& mm® 600 to 700 fine. , S M to 02 9 a o ft 02 H fa 9 o £ * 02 3 O - 02 o * g 05 H < O Q 0Q M M 02 a < l 02 Eh 1 H 02 O Q 02 EH § 600 77.58 620 80.16 640 82.75 660 85.33 680 87.92 ■ 601 77.71 621 80.29 641 82.88 661 85.46 681 88.05 602 77.83 622 80.42 642 83.01 662 85.59 682 88.18 1 ' 603 77.96 623 80.55 643 83.14 663 85.72 683 88.31 1 • 604 78.09 624 80.68 644 83.26 664 85.85 684 88.44 605 78.22 625 80.81 645 83.39 665 85.98 685 88.57 606 78.35 626 80.94 646 83.52 666 86.11 686 88.69 607 78.48 627 81.07 647 83.65 667 86.24 687 88.82 608 78.61 628 81.20 648 83.78 668 86.37 688 88.95 609 78.74 629 81.33 649 83.91 669 86.50 689 89.08 610 78.87 630 81.45 650 84.04 670 86.63 690 89.21 611 79.00 631 81.58 651 84.17 671 86.76 691 89.34 612 79.13 632 81.71 652 84.30 672 86.88 692 89.47 613 79.26 633 81.84 653 84.43 673 87.01 693 89.60 ■ 614 79.39 634 81.97 654 84.56 674 87.14 694 89.73 615 79.52 635 82.10 655 84.69 675 87.27 695 89.86 616 79.64 636 82.23 656 84.82 676 87.40 696 89.99 : 617 79.77 637 82.36 657 84.95 677 87.53 697 90.12 618 79.90 638 82.49 658 85.07 678 87.66 698 90.25 619 80.03 639 82.62 659 85.20 679 87.79 699 90.38 Importers and Dealers in ASSAYERS' MATERIALS, 512 to 518 Washington Street, San Francisco. TABLE OF THE VALUE OE s x r- ve it PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. Fftfattl Mmw fill 141W1 4k ©<©>® 700 to 800 fine. 5 1 a < o ■ F 1 Ti a 02 H E a a a c a ■ K • W CD < a s CO s § CO % a a o a CO i Q 700 90.51 720 93.09 740 95.68 760 98.26 780 1 00.85 701 90.63 721 93.22 741 95.81 761 98.39 781 1 00.98 702 90.76 722 93.35 742 95.94 762 98.52 782 1 01.11 703 90.89 723 93.48 743 96.06 763 98.65 783 1 01.24 704 91.02 724 93.61 744 96.19 764 98.78 784 1 01.37 705 91.15 725 93.74 745 96.32 765 98.91 785 1 01.49 706 91.28 726 93.87 746 96.45 766 99.04 786 1 01.62 707 91.41 727 94.00 747 96.58 767 99.17 787 1 01.75 708 91.54 728 94.13 748 96.71 768 99.30 788 1 01.88 709 91.67 729 94.25 749 96.84 769 99.43 789 1 02.01 710 91.80 730 94.38 750 96.97 770 99.56 790 1 02.14 711 91.93 731 94.51 751 97.10 771 99.68 791 1 02.27 712 92.06 732 94.64 752 97.23 772 99.81 792 1 02.40 713 92.19 733 94.77 753 97.36 773 99.94 793 1 02.53 714 92.32 734 94.90 754 97.49 774 1 00.07 794 1 02.66 715 92.44 735 95.03 755 97.62 775 1 00.20 795 1 02.79 716 92.57 736 95.16 756 97.75 776 1 00.33 796 1 02.92 717 92.70 737 95.29 757 97.87 777 1 00.46 797 1 03.05 718 92.83 738 95.42 758 98.00 778 1 00.59 • 798 1 03.18 719 92.96 739 95.55 759 98.13 779 1 00.72 791) 1 03.31 Importers and Dealers in A.SSA.YERS' MATERIALS, 512 to 518 Washington Street, San Francisco. TABLE OF THE VALUE OF m i x.vac it PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. Wwmw^^®^ M<®& > vomm fiTMi a em. 800 to 900 fine. g CO - < o CO H 5 g CO 1 a O Q 02 H B o g CO M < o q CO H fa M 6 g 02 « 5 o ft 02 g 5 CO - < o Q J2 g K W o 800 1 03.43 820 1 06.02 840 1 08.61 860 1 11.19880 1 13.78 801 1 03.56 821 1 06.15 841 1 08.74 861 1 11.32 881 1 13.91 802 1 03.69 822 1 06.28 842 1 08.86 862 1 11.45 882 1 14.04 803 1 03.82 823 1 06.41 843 1 08.89 863 1 11.58 883 1 14.17 804 1 03.95 824 1 06.54 844 1 09.12 864 1 11.71, 884 1 14.29 805 1 04.08 825 1 06.67 845 1 09.25 865 1 11.84 885 1 14.42 806 1 04.21 826 1 06.80 846 1 09.38 866 1 11.97 886 1 14.55 807 1 04.34 827 1 06.93 847 1 09.51 867 1 12.10 887 1 14.68 808 1 04.47 828 1 07.05 848 1 09.64 868 1 12.23 888 1 14.81 809 1 04.60 829 1 07.18 849 1 09.77 869 1 12.36 889 1 14.94 810 1 04.73 830 1 07.31 850 1 09.90 870 1 12.48 890 1 15.07 811 1 04.86 831 1 07.44 851 1 10.03 871 1 12.61 891 1 15.20 812 1 04.99 832 1 07.57 852 1 10.16 872 1 12.74 892 1 15.33 813 1 05.12 833 1 07.70 853 1 10.29 873 1 12.87 893 1 15.46 814 1 05.24 834 1 07.83 854 1 10.42 874 1 13.00 894 1 15.59 815 1 05.37 835 1 07.96 855 1 10.55 875 1 13.13 895 1 15.72 816 1 05.50 836 1 08.09 856 1 10.67 876 1 13.26 896 1 15.85 817 1 05.63 837 1 08.22 857 1 10.80 877 1 13.39 897 1 15.98 818 1 05.76 838 1 08.35 858 1 10.93 878 1 12.52 898 ] 16.11 819 1 05.89 839 1 08.48 859 1 11.06 879 1 13.65 899 1 16.23 Importers and Dealers in ASSAYERS' MATERIALS, 512 to 518 Washington Street, San Francisco. TABLE OF THE VALUE OF s x tvE it PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. JPvep&Mril ■*» tfOHSffiEtf VASlitWB * ip® ! 900 to 1000 fine. w Q co s g ■ H CO < 3 o Q GO P g H o i TO "A I O CO Eh g § GO < a o Q 02 g B CO - < a o Q CO* i 5 900 1 16.36 920 1 18.95 940 1 21.54 960 1 24.12 980 1 26.71 901 1 16.49 921 1 i9.08 941 1 21.66 961 1 24.25 981 1 26.84 902 1 16.62 922 1 19.21 942 1 21.79 962 1 24.38 682 1 26.97 903 1 16.75 923 1 19.34 943 1 21.92 963 1 24.51 983 1 27.09 904 1 16.88 . 924 1 19.47 944 1 2205 964 1 24.64 984 1 27.22 905 1 17.01 925 1 19.60 945 1 22.18 965 1 24.77 985 1 27.35 906 1 17.14 926 1 19.73 946 1 22.31 666 1 24.90 986 1 27.48 907 1 17.27 927 1 19.85 947 1 22.44 967 1 25.03 987 1 27.61 908 1 17.40 928 1 19.98 948 1 22.57 968 1 25.16 988 1 27.74 909 1 17.53 929 1 20.11 949 1 22.70 969 1 25.28 989 1 27.87 910 1 17.66 930 1 20.24 950 1 22.83 970 1 25.41 990 1 28.00 911 1 17.79 931 1 20.37 951 1 22.96 971 1 25.54 991 1 28.13 912 1 17.92 932 1 20.50 952 1 23.09 972 1 25.67 992 1 28.26 913 1 18.04 933 1 20.63 953 1 23.22 973 1 25.80 993 1 28.39 914 1 18.17 934 1 20.76 954 1 23.35 974 1 25.93 994 1 28.52 915 1 18.30 935 1 20.89 955 1 23.47 975 1 26.06 995 1 28.65 916 1 18.43 936 1 21.02 956 1 23.60 976 1 26.19 996 1 28.78 917 1 18.56 937 1 21.15 957 1 23.73 977 1 26.32 997 1 28.91 918 1 18.69 938 1 21.28 958 1 23.86 978 1 26.45 998 1 29.03 919 1 18.82 939 1 21.41 959 1 23.99 979 1 26.58 999 1 29.16 | 1000 | 1 | 29.29 | Importers And Dealers in A-SsfA-YERS* U.vniKiA US, 512 to 518 Washington Street, San Francisco, PARTIAL LIST OF jkmmmj MmMovimlm mnM : &ikwmit$mlm$ FOK SALE BY JOHN TAYLOR c*3 OO-, 512 to 518 Washington Street, SAN FRANCISCO, Bullion Balances, Capacity 200 oz. Mortars and Pestles, Agate. Cork Borers in sets. Bullion Balances, " 500 oz. Iron Retorts for Amalgam. Condensers, "Liebig's." Bullion Balances, ** 1,000 oz. Glass Retorts and Receivers. Crucibles, Berlin Porcelain. Bullion Balances, " 1,500 oz. Adapters for connecting Retorts and Crucibles, Platinum. Assay Balances, L. Oertling's (London) Receivers. Platinum Foil and Wire. Assay Balances, Becker & Sons. Glass boiling Flasks % oz. to 2 gall. Stirrers, Glass, Clay and Black Lead. Chemical Balances — Various makes. Test Tubes. Spatulas, Porcelain and Steel. Fine Balances for Copper Assays. Stands for holding Test Tubes. Copper Stills and Condensers. Fine Balances — Suitable for ores. Funnels, Glass, Porcelain, Wedgewood Steel Mortars for crushing ore. Assay Weights, (Oertling's) Ivory Box, and Hard Rubber. Wash Bottles. 1000 = 10 grains. Porcelain Evaporating Dishes, (Six in Assay Bottles, numbered 1 to 12. Assay Weights, (Oertling's) Ivory Box, Nest.) Precipitating Jars. 1000 = 1 gramme. Porcelain Evaporating Dishes, all sizes. Aluminum. Assay Weights, (Oertling's) 1000 grains, Porcelain Evaporating Dishes, Han- Rubber Corks for Gas Bottles. down. dled, assorted sizes. Galvanic Batteries. Assay Weights, (Oertling's) 100 Dry Cups or Annealing Cups. m Gas Furnaces. grammes, down. Sieves, (Brass.) Gas Burners, (Bunsen's.) Fine Steel Pincets for Assay Weights. Pipettes, Plain and Graduated. Bell Glasses. Gold Scales and Miner's Pocket Scales. Burette's, Mohr's, with Spring Com- Forceps with platinumed points. Block Weights (Troy) for Bullion Scales presser. Cupels, 1 J/8 and ?■% inches. Bullion Weights, decimals, tenths and Hydrometers for Acids and all liquids. hundredths. Gramme Weights. Jars on foot for Hydrometers. Thermometers. ACIS3 AND CSEUICALS. Blow Pipe Cases, complete with bal- Glass and Porcelain^Tubing. C. P. Nitric Acid in Carboys. ances. Spirit Lamps, (Glass.) C. P. Nitric Acid in 1 and 7 ft bottles. Humid Assay Apparatus, for Assay of Spirit Lamps, by Berzelius. C. P. Sulphuric Acid in 1 and 9 ft Silver by the Humid Method. Test Papers. bottles. Graduated Cylinders 1000 c c, 500 c c, Blow Pipes, various patterns. C. P. Muriatic Acid in 1 and 6 ft 250 c c. Blow Pipe Lamps. bottles. Graduated Flasks 1000 c c. Steel Dies or letters for Stamping Commercial Acids in carboys and bot- Iron Furnaces lined with fire bricks for Bars. tles. Cupeling and Melting, 10 and 12 Steel Figures for Stamping Bars. Litharge. inch. Steel Stamps, oz., No. Fine Gold and Bone Ashes. Muffles. Silver. Bi-Carb. Soda. Cupel Tongs, Steel. Steel Stamps with name cut to order. Borax. Scorifier Tongs. Assayers' Hardware, such as Anvils, Argol. Crucible Tongs. Chisels, Hammers, Plyers, Shears, Carb. Potash. Cupel Moulds, Brass and Iron. Magnets, etc. Nitre. Assay Moulds, Deep and Shallow. Magnifying Glasses, 1, 2, and 3 Lenses Assay Lead. Ingot Moulds, all sizes. Wood and Iron Filtering Stands. Assay Lead, Granulated. Crucibles, Black Lead, (Dixon's) — all Wood Supports. Assay Lead, Rolled. sizes. Beaker Glasses. Aqua Ammonia. Crucibles, Sand, in Nests, all sizes. Water Baths, (Copper, 4 rings.) Cyanide Potash. Crucibles, French Clay, " French and Swedish Filter Paper. Sulphate Copper. Scorifiers. Assayers' Melters. Sulphate Iron. Covers for Crucibles, Clay and Black J. R. Acid Gloves. Quicksilver. Lead. J. R. Tubing, all sizes. Black Oxide Manganese. Roasting Dishes, Clay and Blagk Lead. Woulfs Bottles. Sodium Amalgam, and a general as- Rollers for rolling metals. Specific Gravity Bottles. sortment of Chemicals and Rea- Mortars and Pestles, Iron, all sizes. Graduated Measurer, 1 oz. to 32 oz. gents required by Assayers and Mortars and Pestles, Porcelain and Charcoal Borers. Chemists. Wedgewood. • * PROPERTIES OF GOLD. The color of pure gold is bright yellow, tinged slightly with red. It has a higher luster than copper, tin-or lead, but less than silver, steel, mercury or platinum. It is softer than silver, and more malleable and ductile than any other metal. Although its malleability is so remarkable when pure, it is rendered brittle by the slightest admix- ture of lead. It also becomes brittle when suddenly cooled. When passing from a liquid to a solid state, it contracts more than any other metal. The specific gravity of cast gold is 19.258; that of hammered, is 19.367. The atomic weight of gold is 199.2 — hydrogen being regarded as unity. Its sym- bol is (Au.) Gold enters into fusion at a temperature of 2016° Fah. Gold alloys readily with most metals, the various compounds having physical properties almost as characteristic as distinct elements. This is the case more espe- cially when the metals are combined in chemical equivalents. The following table gives some of the most common alloys : BRITTLE ALLOYS. COLOR OF ALLOYS. MALLEABLE ALLOYS. COLOR OF ALLOYS. Cobalt Dull yellow. Brass yellow. Pale yellow. White. Brass yellow. White. Yellow. White. Manganese . . Gray. Gray. Yellow. Pale yellow. Pale yellow. White. Gray to white. Pale yellow. Pale yellow. Nickle Antimony Iron Copper Zinc Tin Bismuth Lead Silver Platinum Palladium Iridium . , , Rhodium Mercury Osmium Gold is insoluble in nitric, sulphuric, or hydrochloric acids, but dissolves in fluids evolving or containing chlorine, — nitro-hydrochloric acid is the usual solvent. The solution contains terchloride of gold (AuCl 3 ) — from its solution gold may be precipi- tated — By hydrosulphuric acid (if the solution is neutral or acid), as a black tersulphide of gold (AuS 3 ). By sulphide of ammonium, same as above. By ammonia from concentrated solutions, [as aurate of ammonia ("fulminating gold" — a dangerous compound.) By protochloride of tin, as a purple precipitate of Purple of Cassius, a complex compound, supposed to be (AuO, SnO+Sn0 2 +4HO.) Salts of protoxide of iron precipitate pure gold in a finely divided powder. The average fineness of California gold is 884.5. 1 grain of pure gold is worth $0.0430663 1 gramme " " " 0.6646+ 1 ounce Troy " " ....'. 20.671791 1 pound Av. " " 301.46+ 1 ton (2000 lbs.=29166.6 oz. Troy) 602927.36 1 cubic inch (10.12883 oz. Troy) 209.38 1 cubic foot (17502.62 oz. Troy) „ . 361808.64 The standard fineness U. S. gold coin=900. Gold may be distinguished from all other metals or alloys |by the following simple tests. It is yellow, malleable, not acted on by nitric acid, and fuses to a bright bead on charcoal without incrustatation. Gold is never found pure in nature, but always alloyed with other metals, which somewhat modify these reactions. We are indebted to Mr. H. GL Hanks, of San Francisco, for the above article on Gold. J. T. & CO. NOTE TO GOLD TABLE. The following Gold Table containing the values per oz. is calculated from the basis that 387 oz. of pure gold (1000 fine) is worth $8000. Hence 1 oz. is worth $20.671834625, and the ^oo of an oz. (deci- mally expressed as .001 fine) is worth $0.020671834625. "What we usually call fineness, therefore, is simply the weight of fine metal contained in a given quantity of mixed metals or alloys. For instance, in a gold or silver bar which is reported to be 850 fine, it is simply meant that in 1000 parts by weight, 850 are fine gold ox fine silver, as the case may be. In our mints, the value of gold is computed from standard weight; that is, gold which is 900 fine, that being the fineness of our gold coin as required by law. The formula in this case is, 43 oz. of standard gold are worth $800. Hence, multiply standard oz. by 800, and divide by 43, and you obtain the value. Example: — Take 126 ^ oz. at 856 fine, and we obtain the result thus: 126.15 oz. 856 fineness of gold. 756 90 6 307 5 100 920 U. S. standard, 900) 107,984.40 oz. of fine gold. 119,982 oz. standard gold 800 43) 95,985.600 $2,232.22 value. To find value per oz., divide total value ($2,232.22) by standard oz. (119,982) and yon have $28.60 46 , which will be seen by reference to the table is the value of 1 oz. of gold at 900 fine. The value in this case would have been ascertained thus: By reference to the Gold Table and oppo- site 856, the value of one oz. 856 fine is $17,69.51. Hence, 126.15 oz 176951 126 15 6 307 5 113 585 756 90 8 830 5 12 615 $2,232.22 value. TABLE OF THE VALUE OF G£ O Xa O PER OUNCE TROY, AT : DIFFERENT \ DEGREES OF kYIiMft A FINENESS. mm® <&®)WM Wl to 100 line. 02 I o Q 1 a M 02 < a o 02* o g 02 < O A 02 7, H 5 02 < o ft 02 g g 02 < o Q 02 1 W O 00 00.00 20 41.34 40 82.69 60 1 24.03 80 1 65.37 1 02.07 21 43.41 41 84.75 61 1 26.10 81 1 67.44 2 04.13 22 45.48 42 86.82 62 1 28.17 82 1 69.51 3 06.20 23 47.55 43 88.89 63 1 30.23 83 1 71.58 4 08.27 24 49.61 44 90.96 64 1 32.30 84 1 73.64 5 10.34 25 51.68 45 93.02 65 1 34.37 85 1 75.71 6 12.40 26 53.75 46 95.09 66 1 36.43 86 1 77.78 ■ 7 14.47 27 55.81 47 97.16 67 1 38.50 87 1 79.84 8 16.54 28 57.88 48 99.22 68 1 40.57 88 1 81.91 9 18.60 29 59.95 49 1 01.29 69 1 42.64 § 89 1 83.98 10 20.67 30 62.02 50 1 03.36 70 1 44.70 90 1 86.05 11 22.74 31 64.08 51 1 05.43 71 1 46.77 91 1 88.11 12 24.81 32 66.15 52 1 07.49 72 1 48.84 92 1 90.18 13 26.87 33 68.22 53 1 09.56 73 1 50.90 93 1 92.25 14 28.94 34 70.28 54 1 11.63 74 1 52.97 94 1 94.32 15 12 to 518 Washington Street, San Francisco TABLE OF THE VALUE OF G O I-i B PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. i <&mWM ¥AYIi*R * CH»« 100 to 800 fine. H X O GO 1 H oq M < Q DD Eh H w" - i g g CO < a o Q 02 H g 2 « o ft go H O 100 2 06.72 120 2 48.06 140 2 89.41 160 3 30.75 180 3 72.09 101 2 08.79 121 2 50.13 141 2 91.47 161 3 32.82 181 3 74.16 102 2 10.85 122 2 52.20 142 2 93.54 162 3 34.88 182 3 76.23 103 2 12.92 123 2 54.26 143 2 95.61 163 3 36.95 183 3 78.29 104 2 14.99 124 2 56.33 144 2 97.67 164 3 39.02 184 3 80.36 105 2 17.05 125 2 58.40 145 2 99.74 165 3 41.09 185 3 82.43 106 2 19.12 126 2 60.46 146 3 01.81 166 3 43.15 186 3 84.50 107 2 21.19 127 2 62.53 147 3 03.88 167 3 45.22 187 3 86.56 108 2 23.26 128 2 64.60 148 3 05.94 168 3 47.29 188 3 88.63 109 2 25.32 129 2 66.67 149 3 08.01 169 3 49.35 189 3 90.70 110 2 27.39 130 2 68.73 150 3 10.08 170 3 51.42 190 3 92.76 111 2 29.46 131 2 70.80 151 3 12.14 171 3 53.49 191 3 94.83 112 2 31.52 132 2 72.87 152 3 14.21 172 3 55.56 192 3 96.90 113 2 33.59 133 2 74.94 153 3 16.28 i 173 3 57.62 193 3 98.97 114 2 35.66 134 2 77.00 154 3 18.35 174 3 59.69 194 4 01.03 115 2 37.73 135 2 79.07 155 3 20.41 175 3 61.76 195 4 03.10 116 2 39.79 136 2 81.14 156 3 22.48 176 3 63.82 196 4 05.17 117 2 41.86 137 2 83.20 157 3 24.55 177 3 65.89 197 4 07.24 118 2 43.93 138 2 85.27 158 3 26.61 178 3 67.96 198 4 09.30 119 2 45.99 ' 139 2 87.34 159 3 28.68 179 3 70.03 199 4 11.37 Importers :m O Xa D PER OUNCE TROY, AT J DIFFERENT ] DEGREES OF FINENESS. 400 to 500 fine. I®II Wd g CD « •< O Q go H g H o g 5 m < a o a to H m 5 g -r. « - o 02 B g a o Q 02 g 02 « <3 a o Q J2 H H o 400 8 26.87 420 8 68.22 440 9 09.56 460 9 50.90 480 10 92.25 401 8 28.94 421 8 70.28 441 9 11.63 461 9 52.97 481 10 94.32 402 8 31.01 422 8 72.35 442 9 13.70 462 9 55.04 482 10 96.38 403 8 33.07 423 8 74.42 443 9 15.76 463 9 57.11 483 10 98.45 404 8 35.14 424 8 76.49 444 9 17.83 464 9 59.17 484 10 00.52 405 8 37.21 425 8 78.55 445 9 19.90 465 9 61.24 485 10 02.58 406 8 39.28 426 8 80.62 446 9 21.96 466 9 63.31 486 10 04.65 407 8 41.34 427 8 82.69 447 9 24.03 467 9 65.37 487 10 06.72 408 8 43.41 428 8 84.75 448 9 26.10 468 9 67.44 488 10 08.79 409 8 45.48 429 8 86.82 '449 9 28.17 469 9 69.51 489 10 10.85 410 8 47.55 430 8 88.89 450 9 30.23 470 9 71.58 490 10 12.92 411 8 49.61 431 8 90.96 451 9 32.30 471 9 73.64 491 10 14.99 412 8 51.68 432 8 93.02 452 9 34.37 472 9 75.71 492 10 17.05 413 8 53.75 433 8 95.09 453 9 36.43 473 9 77.78 493 10 19.12 414 8 55.81 434 8 97.16 454 9 38.50 474 9 79.84 494 10 21.19 415 8 57.88 435 8 99.22 455 9 40.57 475 9 81.91 495 10 23.26 416 8 59.95 436 9 01.29 456 9 42.64 476 9 83.98 496 10 25.32 417 8 62.02 437 9 03.36 457 9 44.70 477 9 86.05 497 10 27.39 418 8 64.08 438 9 05.43 458 9 46.77 478 9 88.11 498 10 29.46 419 8 66.15 439 9 i 07.49 459 9 48.84 479 9 90.18 ' 499 10 31.52 Imp ►orters and '. Dealers in ASSAYERS' MATERI A JL.J5J, 512 to 518 Washington Street, San F rancisco. TABLE OF THE VALUE OF Gr O L D PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. F#sp^p#I top <&mWEM WAiriMMB A C0O« 500 to 600 fine. 1 02 o Q oo g § g o Q 00 I s - o 00 K B 5 00 3 o oo W* 00 5 i I 500 10 33.59 520 10 74.94 540 11 16.28 560 11 57.62 580 11 98.97 501 10 35.66 521 10 77.00 541 11 18.35 561 11 59.69 581 12 01.03 502 10 37.73 522 10 79.07 542 11 20.41 562 11 61.76 582 12 03.10 503 10 39.79 523 10 81.14 543 11 22.48 563 11 63.82 583 12 05.17 504 10 41.86 524 10 83.20 544 11 24.55 564 11 65.89 584 12 07.24 505 10 43.93 525 10 85.27 545 11 26.61 565 11 67.96 585 12 09.30 506 10 45.99 526 10 87.34 546 11 28.68 566 11 70.03 586 12 11.37 507 10 48.06 527 10 89.41 547 11 30.75 567 11 72.09 587 12 13.44 508 10 50.13 528 10 91.47 548 11 32 82 568 11 74.16 588 12 15.50 509 10 52.20 529 10 93.54 549 11 34.88 569 11 76.23 589 12 17.57 510 10 54.26 530 10 95.61 550 11 36.95 570 11 78.29 590 12 19.64 511 10 56.33 531 10 97.67 551 11 39.02 . 571 11 80.36 591 12 21.71 512 10 58.40 532 10 99.74 552 11 41.09 572 11 82.43 592 12 23.77 513 10 60.47 533 11 01.81 553 11 43.15 573 11 84.50 593 12 25.84 514 10 62.53 534 1 11 03.88 554 11 45.22 574 11 86.56 594 12 27.91 515 10 64.60 535 11 05.94 555 |H 47.29 575 11 88.63 595 12 29.97 516 10 66.67 536 11 08.01 556 11 49.35 576 11 90.70 596 12 32.04 517 10 68.73 537 11 10.08 557 11 51.42 577 11 92.76 597 12 34.11 518 10 70.80 538 11 12.14 558 11 53.49 578 11 94.83 598 12 36.18 519 10 72.87 539 11 14.21 559 11 55.56 579 11 96.90 599 12 38.24 Importers and Dealers in At^AYER-S' MATERIALS, 512 to 518 Washington Street, San Francisco. TABLE OF THE VALUE OF GOLD PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. VAYI4MB & mm® 600 to TOO fine. 600 610 601 602 603 604 605 606 607 608 609 611 612 613 614 615 616 617 618 619 50.65 52.71 1254.78 12*56.85 1258.91 12 60.98 40.31 42.38 44.44 46.51 48.58 63.05 65.12 67.18 69.25 71.32 73.39 75.45 77.52 79.59 620 630 621 622 623 624 625 626 627 628 629 631 632 633 634 635 636 637 638 639 12 12 12 12 12 12 12 12 12 13 13 13 13 13 13 13 13 13 13 13 81.65 83.72 85.79 87.86 89.92 91.99 94.06 96.12 98.19 00.26 02.33 04.39 06.46 08.53 10.59 12.66 14.73 16.80 18.86 20.93 640 650 641 642 643 644 645 646 647 648 649 651 652 653 654 655 656 657 658 659 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 23.00 25.06 27.13 29.20 31.27 33.33 35.40 37.47 39.53 41.60 43.67 45.74 47.80 49.87 51.94 54.01 56.07 58.14 60.21 62.27 660 670 661 662 663 664 665 666 667 668 669 671 672 673 674 675 676 677 678 679 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 14 14 64.34 66.41 68.48 70.54 72.61 74.68 76.74 78.81 80.88 82.95 85.01 87.08 89.15 91.21 93.28 95.35 97.42 99.48 01.55 03.62 680 690 681 682 683 684 685 686 687 688 689 691 692 693 694 695 696 697 698 699 14 14 14 14 14 14 14 14 14 14 14 14 L4 14 14 14 14 14 14 14 05.68 07.75 09.82 11.89 13.95 16.02 18.09 20.16 22.22 24.29 26.36 28.42 30.49 32.56 34.63 36.69 38.76 40.83 42.89 44.96 Importers and Dealers in A^SAYER,!**' MATERIALS*, 512 to 518 Washington Street, San Francisco. TABLE OF THE VALUE G: O Xa El PER OUNCE TROY, AT DIFFERENT DEGREES OF OF FINENESS. 700 to 800 fine. 700 710 701 702 703 704 705 706 707 708 709 711 712 713 714 715 716 717 718 719 47.03 49.10 51.16 53.23 55.30 57.36 59.43 61.50 63.57 65.63 67.70 69.76 71.83 73.90 75.97 78.04 80.10 82.17 84.27 86.30 720 730 721 722 723 724 725 726 727 728 729 731 732 733 734 735 736 737 738 739 88.37 90.44 92.51 94.57 96.64 98.71 00.78 02.84 04.91 06.98 09.04 11.11 13.18 15.25 17.31 19.38 21.45 23.51 25.58 27.65 740 750 741 742 743 744 745 746 747 748 749 751 752 753 754 755 756 757 758 759 29.72 31.78 33.85 35.92 37.98 40.05 42.12 44.18 46.25 48.32 50.39 52.45 54.52 56.59 58.66 60.72 62.79 64.86 66.93 68.99 760 770 761 762 763 764 765 766 767 768 769 771 772 773 774 775 776 777 778 779 71.06 73.13 75.19 77.26 79.33 81.40 83.46 85.53 87.60 89.66 91.73 93.80 95.87 97.93 00.00 02.07 04.13 06.20 08.27 10.34 780 790 781 782 783 784 785 786 787 788 789 791 792 793 794 795 796 797 798 799 12.40 14.47 16.54 18.60 20.67 22.74 24.81 26.87 28 94 31.01 33.07 35.14 37.21 39.28 41.34 43.41 45.48 47.55 49.61 51.68 Importers and Dealers in A^SAYER^' MATERIALS, 512 to 518 Washington Street, San Francisco. TABLE OF THE VALUE OF O OLD PER OUNCE TROY, AT : DIFFERENT : DEGREES OF FINENESS. IP&»@p®£*©& $ mm ^«o«ir lAiiti m mm® 800 to 900 fine. g CO « o o CO p M 50 a o p GO F g g Is « < a o ft 02 g H O g CO i CO 1 5 g M CO - < O a CD. i o 800 16 53.75 820 16 95.09 840 17 36.43 860 17 77.78 880 18 19.12 801 16 55.81 821 16 97.16 841 17 38.50 861 17 79.84 • 881 18 21.19 802 16 57.88 822 16 99.22 842 17 40.57 862 17 81.91 882 18 23.26 803 16 59.95 823 17 01.29 843 17 42.64 863 17 83.98 883 18 25.32 804 16 62.02 824 17 03.36 844 17 44.70 864 17 86.05 884 18 27.39 805 16 64.08 825 17 05.43 845 17 46.77 865 17 88.11 885 18 29.46 806 16 66.15 826 17 07.49 846 17 48.84 866 17 90.18 886 18 31.52 807 16 68.22 827 17 09.56 847 17 50.90 867 17 92.25 887 18 33.59 808 16 70.28 828 17 11.63 848 17 52.97 868 17 94.32 888 18 35.66 809 16 72.35 829 17 13.70 849 17 55.04 869 17 96.38 889 18 37.73 810 16 74.54 830 17 15.76 850 17 57.11 870. 17 98.45 890 18 39.79 811 16 76.49 831 17 17.83 851 17 59.17 871 18 00.52 891 18 41.86 812 16 78.55 832 17 19.90 852 17 61.24 872 18 02.58 892 18 43.93 813 16 80.62 833 17 21.96 853 17 63.31 873 18 04.65 893 18 45.99 814 16 82.69 834 17 24.03 854 17 65.37 874 18 06.72 894 18 48.06 815 16 84.75 835 17 26.10 855 17 67.44 875 18 08.79 895 18 50.13 816 16 86.82 836 17 28.17 856 17 69.51 876 18 10.85 896 18 52.20 817 16 88.89 837 17 30.23 857 17 71.58 877 18 12.92 897 18 54.26 818 16 90.96 838 17 32.30 858 17 73.64 878 18 14.99 898 18 56.33 819 16 93.02 839 17 34.37 859 17 75.71 879 18 17.05 899 18 58.40 Importers and Dealers in ASSAYER,*^ MATERIALS, 512 to 518 Washington Street, San Francisco, TABLE OF THE VALUE OF G O L n PER OUNCE TROY, AT DIFFERENT DEGREES OF FINENESS. mwmM §mw$ m 900 to 1000 fine. 900 910 901 902 903 904 905 906 907 908 909 911 912 913 914 915 916 917 918 919 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 60.46 62.53 64.60 66.67 68.73 70.80 72.87 74.94 77.00 79.07 81.14 83.20 85.27 87.34 89.41 91.47 93.54 95.61 9^.67 99.74 920 930 921 922 923 924 925 926 927 928 929 931 932 933 934 935 936 937 938 939 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 01.81 03.88 05.94 08.01 10.08 12.14 14.21 16.28 18.35 20.41 22.48 24.55 26.61 28.68 30.75 32.82 34.88 36.95 39.02 41.08 940 950 941 942 943 944 945 946 947 948 949 951 952 953 954 955 956 957 958 959 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 43.15 45.22 47.29 49.35 51.42 53.49 55.56 57.62 59.69 61.76 63.82 65.89 67.96 70.03 72.09 74.16 76.23 78.29 80.36 82.43 960 970 Z. 961 962 963 964 965 666 967 968 969 971 972 973 974 975 976 977 978 979 19 19 19 19 19 19 19 19 20 20 20 20 20 20 20 20 20 30 20 20 84.50 86.56 88.63 90.70 92.76 94.83 96.90 98.97 01.03 03.10 05.17 07.23 09.30 11.37 13.44 15.50 17.57 19.64 21.70 23.77 980 990 981 982 983 984 985 986 987 988 989 991 992 993 994 995 996 997 998 999 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 25.84 27.91 29.97 32.04 34.11 36.18 38.24 40.31 42.38 44.44 46.51 48.58 50.65 52.71 54.78 56.85 58.91 60.98 63.05 65.12 | 1000 | 20 | 67.18 | Importers and X>ealerjs in A8SAYER8' MATERIALS, 512 to 518 Washington Street, San Francisco. TABLE O I* 1" IS 3E3 RELATIVE VALUE OF AVOIRDUPOIS AND TROY WEIGHTS. AVOIRDUPOIS OUNCES REDUCED TO TROY WEIGHTS AND GRAINS. TROY OUNCES REDUCED TO AVOIRDUPOIS WEIGHTS AND GRAINS. Avoirdupois Ounces. TROY. Grains. Troy Ounces. AVOIRDUPOIS. Grains. Ozs. Dwts. Grs. Ozs. Drachms. .... 1.. ....18.. ... «$:'; ... 437J.. .. . 1.. .... 1.. .. 2.. ... 480... ... 2. .... 1.. ....16 . ...ii .. ... 875 .. .... 2.. .... 2.. .... 3.. ... 960... .... 3.. .... 2.. ....14.. ...16*.. ...1312J.. .... 3.. .... 3.. .... 5.. ...1440... .... 4.. .... 3.. ....12.. ...22 .. ...1750 .. .... 4.. .... 4.. .... 6.. ...1920... .... 5.. .... 4.. ....11.. ... 3*.. ...2187J.. .... 5.. .... 5.. .... 8.. ...2400... .... 6.. .... 5.. .... 9.. ... 9 .. ...2625 .. ... 6.. .... 6.. .... 9.. ...2880... .... 7.. .... 6.. .... 7.. ...UJ.. ...3062J.. .... 7.. .... 7.. ....11.. ...3360... .... 8.. .... 7.. .... 5.. ...20 .. ...3500 .. .... 8.. .... 8. ....12.. ...3840... .... 9.. .... 8.. ... 4.. ... u.. ...3937£.. .... 9.. .... 9.. ....14.. ...4320... ....10.. .... 9.. .... 2.. ... 7 .. ...4375 .. ....10.. ....11.. .... 0.. ...4800... ....11.. ....10.. .... 0.. ...12J.. ...4812J.. ....11.. ....12.. .... 1.. ...5280... ....12 . ....10.. ....18.. ...18... ...5250 .. ...12.. ... 13.. .... 3.. ...5760... 13 11 16.. ...23J.. ... 5 .. ..10§.. ...16 .. . . . 5687i . . ....14.. 15 ...12.. 13 ....15.. 13. ...612 .. 656 5 24, ....16.. ...14.. ....11.. ...700 **2 ' ' A.VOIR.IDUPOIS, 16 drachms =1 ounce. DRACHMS. OUNCES. POUNDS. =1 pound. =1 cwt. =1 ton. 256 28672 = 1792 573440 = 35840 = 2240 11$ 2( 1 pounds . ) cwt .... TROY. 24 1: grains = =1 dwt. =1 ounce. =1 pound. GRAINS. DWTS. 480 5760 m* 240 2( ) dwts = li I ounces = ICAPT WEIGHTS. 12 granos .... make 1 tomin Equal 3 tomines . . . make 1 adarme 2 adarmes. . .make 1 ochava or dracma 8 ochavas . . .make 1 onza 8 onza8 make 1 marco 2 marcos make 1 libra 9.2 grains, Troy. 27.7 grains, " 55.5 grains, " 443.8 grains, or 0.9245 oz. Troy. 3550.5 grains, or 7.396 oz. Troy. 7101. grains, or 14.7937 oz. Troy. FRENCH WEIQKTS^ Milligramme, 1-1000 of a gramme Equal Centigramme, 1-100 of a gramme " Decigramme, 1-10 of a gramme " *Gramme (unit of weight) " Decagramme, 10 grammes " Hectogramme, 100 grammes " Kilogramme, 1,000 gramme " Myriagramme, 10,000 grammes " 321f . .0.0154 grains ..0.1544 ..1.5440 .15.44 154.4 1544.0 ]3.2167oz. Troy, j 3.5291 oz.Avd'ps. 32 6 x oz. Troy or 2.2057 lbs. Avd'ps. 23.557 ♦Some authorities give the gramme as 15.43402344 grains, at which rate the kilogramme would be 32.154 oz. Troy. CBIHA. Weights. 16 taels make 1 catty or pound 1£ lbs. Avoirdupois. 100 catties make 1 pecul or tarn = 133J Chinese Weights into Troy. 10 taels =12.080 oz. 9 " =10.872 " 8 " = 9.604 " 7 M = 8.456 " 6 •■ = 2.248 " 5 taels = 6.040 oz. 4 " = 4.832 " 3 " = 3.624 " 2 " = 2.416 " 1 " = 1.208 " o II i iar a>* Money. 10 cash ("le ") make 1 candareen (" fun.") 10 candareens make 1 mace ("tseen.") 10 mace make 1 tael ( leang." Bullion at Hongkong or Canton. 1 tael =579.84 grains, Troy. 1 tolah =180. 1 tael = 3.221J tolahs. 717 taels =1,000 dollars (Mexican.) 97.6 taels Canton weight equal 100 taels Shanghae weight 1 tael Shanghae weight equals 568 grains Troy. JkSSAY WEIGHTS 1000-10 Grains. 10 grains 5 " 3 «• 2 " 1 " 0.5 " 0.3 " 0.2 " 0.1 " 0.05 " 0.03 " 0.02 " 0.01 " =1000 =.500 1 grai .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1000=1 Gramme. ame .=1000 .—.500 =.300 =.300 —.200 .—.200 =.100 — .100 =.050 =.050 —.030 —.030 =.020 =.020 =.010 =.010 =.005 .=.005 —.003 — .003 —.002 .=.002 =.001 .=.001 ^SS^Y TABLE Showing the amount of Gold and Silver, in ounces and fractions, contained in one ton of ore, of two thousand pounds, from j the weight of fine metal obtained in an assay of (half an ounce) or two hundred and forty grains of ore. Wwm^mwmM toi m oot p ##anir lAiiti O O M o M M O O M Q M *-i P P HiMjM, P p 240 fine the ° 5 l-S o S 2 5* B" CD CO £ a- S78.96 6 7.29 9.43 150.70 6 43.74 56.56 904.18 7 8.50 10.98 175.71 7 44.95 58.11 929.19 8 9.72 12.56 200.93 8 46.17 59.69 954.42 9 10.93 14.13 225.94 9 47.38 61.26 979.43 .010 12.15 15.71 251.16 .040 48.60 62.83 1,004.65 1 13.39 17.27 276.17 1 49.81 64.40 1,029.66 2 14.58 18.85 301.39 2 51.03 65.98 1,054.88 3 15.79 20.41 326.41 3 52 24 67.54 1,079.89 4 17.01 21 99 351.63 4 53.46 69.12 1,105:11 5 18.22 23.56 376.64 5 54.67 70.68 1,130.12 .6 19.43 25.12 401.65 6 55.89 72.26 1,155.34 7 20.65 26.70 426.87 7 57.10 73.82 1,180.35 8 21.86 28.26 451.88 8 58.32 75.40 1,205.57 9 23.08 29.84 477.10 9 59.53 76.96 1,230.58 .020 24.30 31.42 502.32 .050 60.75 78.54 1,255.80 1 25.51 32.98 527.34 1 61.96 80.10 1,280.81 2 26.73 34.56 552.56 2 63.18 81.68 1,306.03 3 27.94 36.23 577.57 3 64.39 83.24 1,331.04 4 29.16 37.70 602.79 4 65.61 84.82 1,356.26 5 30.37 39.26 627.80 5 66.82 86.38 1,381.27 6 31.59 40.83 653.02 6 68.04 87.96 1,406.49 7 32.80 42.41 678.03 7 69.25 89.52 1,431.50 8 34.02 43.98 703.25 8 70.47 91.10 1,456.72 9 35.23 45.55 728.26 9 71.68 92.67 1,481.73 in iporters and I>eale rs in - VSSA .YERH' M ATE] MALS, 5 12 to 518 W 'ashingto n Stre 3t, San Fran oisco. ASSAY TABLE [continued] Showing the amount of Gold and Silver, in ounces and fractions, contained 7'rc, o^e ton of ore, of two thousand pounds, from the weight of fine metal obtained in an assay of (half an ounce) or two hundred and forty grains of ore. toi i m mm>® p liii watum O O 1— I Q M M O O M Q M M p MiH)H> 204 fine the HS CD GO g- < g CD CO §• e+ ^ bO a s ° © 5 t-tj CD 3 o 2 S. CD 00 1 5 ' grains of ore { Metal— Thousa unit of 10 gra CD O a> O <-+• >-j P, CD 1 $ o £ a 4 'o : ^ „ CD CD H ! O a' H «& W 4 §mm smmm 1 If 20 grammes of ore give of fine Metal — Thousands of the unit of 1 gramme. One ton of Ore will yield of Fine Metal — Ounces. Intrinsic Value per ton — Silver Intrinsic Value per ton — Gold If 20 gi ammes of Ore give of Fine Metal — Thousands of the unit of 1 gramme . . One ton of Ore will yield, of Fine Metal — Ounces. Intrinsic value per ton — Silver Intrinsic Value per ton — Gold .001 1.458 1.88.5 30.14.6 .034 49.583 64.10.4 1024.97.4 .002 2.916 3.77.1 60.29.2 .035 51.041 65.99.0 1055.12.0 .003 4.374 5.65.7 90.43.8 .036 52.499 67.87.5 1085.26.7 .004 5.833 7.54.2 120.58.5 .037 53.958 69.76.0 1115.41.3 .005 7.291 9.42.8 150.73.1 .038 55.416 71.64.6 1145.55.9 .006 8.749 11.31.3 180.87.7 .039 56.874 73.53.1 1175.70.5 .007 .008 10.208 11.666 13.19.8 15.08.4 211.02.4 241.17.0 .040 58.333 75.41.9 1205.85.2 .041 59.791 77.80.4 1235.09.8 .009 13.124 16.95.9 271.31.6 .042 61.249 79.18.9 1266.11.4 .010 14.583 18.85.4 301.46.3 .043 62.708 81.07.5 1296.29.1 .011 16.041 20.73.9 331.60.9 .044 64.166 82.96.0 1326.43.7 .012 17.499 22.62.5 361.75.5 .045 65.624 84.84.6 1356.58.3 .013 18.958 24.51.0 391.90.1 i .046 67.083 86.73.1 1386.73.0 .014 20.416 26.39.5 422.04.8 1 .047 68.541 88.61.7 • 1416.87.6 .015 21.874 28.28.1 452.19.4 ! .048 69.999 90.50.2 1447.02.2 .016 23.333 30.16.6 482.34.0 .049 71.458 92.38.7 1477.16.8 .017 24.791 32.05.2 512.48.7 .050 72.916 94.27.3 1507.31.5 .018 26.249 33.93.7 542.63.3 .051 74.374 96.15.9 1537.46 1 .019 27.708 35.82.4 572.77.9 .052 75.833 98.04.4 1567.60.7 .020 29.166 37.70.8 602.92.6 .053 77.291 99.93.0 1597.75.4 .021 30.624 38.59.4 633.07.2 .054 78.749 101.81.5 1627.90.0 .022 32.083 41.47.9 \o $03.21.8 .055 80.208 103.70.1 1658.04.6 .023 33.541 43.36.4 693.36.5 .056 81.666 105.58.6 1688.19.3 .024 34.999 45.25.0 723.51.1 .057 83.124 107.47.1 1718.33.9 .025 36.458 47.13.5 753.65.7 .058 84.583 109.35.7 1748.48.5 .026 37.916 49.02.1 783.80.3 .059 86.041 111.24.2 1778.63.2 .027 39.374 50.90.6 813.95.0 .060 87.499 113.12.8 : 1808.77.8 .028 40.833 52.79.2 844.09.6 .061 88.958 115.01.3 1838.92.4 .029 42.291 54.67.7 874.24.2 .062 90.416 116.89.9 1869.07.0 .030 43.749 56.56.2 904.38.9 .063 91.874 118.78.4 ! 1899.21.7 .031 45.208 58.44.8 934.53.5 .064 93.333 120.67.0 1929.36.3 .032 46.666 60.33.3 964.68.1 .065 94.791 122.55.5 1959.50.9 .033 48.124 62.21.9 994.82.8 iin porters and !>«' alers in A8NA YERH' MATEI IIAXJS, 5 12 to 611 ? Washington Strei it, San Fr ancisco. JkiSAY TAmE*m V J ^ t ^ rar ^f [continued] Showing the amount of Gold and Silver, in < ounces and fractions^ ^Oa^tn^: in one ton of ore, of two thousand pounds, from the weight of fine metal obtained in an 1 f€ assay of 20 Grammes of or 9* m fill VAXEMM If 20 grammes of Ore give of Fine Metal— Thousands of the unit of 1 gramme . . One ton of Ore will yield of Fine Metal — Ounces. Intrinsic Value per ton — Silver Intrinsic Value per ton — Gold If 20 grammes of Ore give of Fine Metal — Thousands of the unit of 1 gramme . . One ton of Ore will yield of Fine Metal — Ounces. Intrinsic Value per ton — Silver Intrinsic Value per ton — Gold .066 96.249 124.44.0 1989.65.6 .098 142.916 184.77.5 2954.33.7 .067 .97.708 126.32.6 2019.80.2 .099 144.374 186.66.1 2984.48.4 .068 99.166 128.21.1 2049.94.8 .100 145.833 188.54.7 3014.63.0 .069 100.644 130.09.7 2080.09.5 .200 291.666 377.09 6029.26 .070 102.083 131.98.3 2110.24.1 .300 437.499 565.64 9043.91 .071 103.541 133.86.8 2140.38.7 .400 583.333 754.19 12058.55 .072 104.999 135.75.4 2170.53.4 .500 729.166 942.73 15073.18 .073 106 458 137.63.4 2200.68.0 .600 874.999 1131.29 18087.82 .074 107.916 139.52.4 2230.82.6 .700 1020.833 1319.83 21102.46 .075 109 374 141.41.0 2260.97.2 .800 1166.666 1508.38 24117.09 ! .076 110.833 143.29.5 2291.11.9 .900 1312.499 1696.93 27131.73 .077 .078 112.291 113.749 145.18.1 147.06.6 2321.26.5 2351.41.1 1000 Or 1 Gramme. t 1458.333 1885.47 30146.37 .079 115.208 148.95.2 2381.55.8 2 << 2916.666 3770.95 60292.74 .080 116.666 150.83.7 2411.70.4 3 - 4374.999 5656.42 90439.10 .081 118.124 152.72.2 2441.85.0 4 '< 5833.333 . 7541.90 120585.47 .082 119.583 154.60.7 2471.99.7 5 " 7291.666 9427.37 150731.84 .083 121.041 156.49.4 2502.14.3 6 M 8749.999 11312.85 180878.21 .084 122.499 158.37.9 2532.28.9 7 « 10208.333 13198.32 211024.58 .085 123.957 160.265 2562.43.6 8 " 11666.666 15083.80 241170.94 .086 125.416 162.15.0 2592.58.2 9 " 13124.999 16964.27 271317.31 .087 126.874 164.03.5 2622.72.8 10 » 14583.333 18854.75 I 301463.68 .088 128.332 165.92.1 2652.87.4 11 " 16041.666 20740.22 331610.05 .089 129.791 167.80.6 2683.02.1 12 " 17499.999 22625.70 361756.42 .090 131.249 169 69.2 2713.16.7 13 " 18958.333 24511.17 391902.78 .091 132.708 171.57.7 2743.31.3 14 '« 20416.666 26396.65 422049.15 .092 134 J 66 173.46.3 2773.46.0 15 " 21874.999 28282.12 452195.52 .093 135 624 175.34.8 2803.60.6 16 " 23333.333 30167.60 482341.89 .094 137.083 177.23.3 2833.75.2 17 " 24791.666 32053.07 512488.25 .095 138.541 179.11.9 2863.89.9 18 " 19 " 26249.999 27708.333 33938.55 35824.02 542634.62 572780.99 .096 139.999 181.00.4 2894.04.5 .097 141.4581 182.89.0 2924.19.1 20 " 29166.666 37709.50 602927.36 Importers ;in $«mwm i If 20 grammes of ore give of fine Metal — Thousands of the unit of 1 gramme. One ton of Ore will yield of Fine Metal — Ounces. Intrinsic Value per ton — Silver Intrinsic Value per ton — Gold If 20 grammes of Ore give of Fine Metal — Thousands of the unit of 1 gramme . . i ! One ton of Ore will yield* of Fine Metal— Ounces. Intrinsic value per ton — Silver Intrinsic Value per ton — Gold .001 1.458 1.88.5 30.14.6 .034 49.583 64.10.4 1024.97.4 .002 2.916 3.77.1 60.29.2 .035 51.041 65.99.0 1055.12.0 .003 4.374 5.65.7 90.43.8 .036 52.499 67.87.5 1085.26.7 .004 5.833 7.54.2 120.58.5 .037 53.958 69.76.0 1115.41.3 .005 7.291 9.42.8 150.73.1 .038 55.416 71.64.6 1145.55.9 .006 8.749 11.31.3 180.87.7 .039 56.874 73.53.1 1175.70.5 .007 .008 10.208 11.666 13.19.8 15.08.4 211.02.4 241.17.0 .040 58.883 76.41.9 1205.85.2 .041 50.791 77.80.4 1235.99.8 .009 13.124 16.95.9 271.31.6 .042 61.249 79.18.9 1266.11.4 .010 14.583 18.85.4 301.46.3 .043 62.708 81.07.5 1296.29.1 .011 16.041 20.73.9 331.60.9 .044 64.166 82.96.0 1326.43.7 .012 17.499 22.62.5 361.75.5 .045 65.624 84.84.6 1356.58.3 .013 18.958 24.51.0 391.90.1 ; .046 67.083 86.73.1 1386.73.0 .014 20.416 26.39.5 422.04.8 .047 68.541 88.61.7 • 1416.87.6 .015 21.874 28.28.1 452.19.4 1 .048 69.999 90.50.2 1447.02.2 .016 23.333 30.16.6 482.34.0 1 .049 71.458 92.38.7 1477.16.8 .017 24.791 32.05.2 512.48.7 1 .050 72.916 94.27.3 1507.31.5 .018 26.249 33.93.7 542.63.3 .051 74.374 96.15.9 1537.46 1 .019 27.708 35.82.4 572.77.9 .052 75.833 98.04.4 1567.60.7 .020 29.166 37.70.8 602.92.6 .053 77.291 99.93.0 1597.75.4 .021 30.624 38.59.4 633.07.2 .054 78.749 101.81.5 1627.90.0 .022 32.083 41.47.9 V, $63.21. 8 .055 80.208 103.70.1 1658.04.6 .023 33.541 43.36.4 693.36.5 .056 81.666 105.58.6 1688.19.3 .024 34.999 45.25.0 723.51.1 .057 83.124 107.47.1 1718.33.9 .025 36.458 47.13.5 753.65.7 .058 84.583 109.35.7 : 1748.48.5 .026 37.916 49.02.1 783.80.3 .059 86.041 111.24.2 1778.63.2 .027 39.374 50.90.6 813.95.0 .060 87.499 113.12.8 1808.77.8 .028 40.833 52.79.2 844.09.6 .061 88.958 115.01.3 1838.92.4 .0*9 42.291 54.67.7 874.24.2 .062 90.416 116.89.9 1869.07.0 .030 43.749 56.56.2 904.38.9 .063 91.874 118.78.4 l 1899.21.7 .031 45.208 58.44.8 934.53.5 .064 93.333 120.67.0 1929.36.3 .032 46.666 60.33.3 964.68.1 .065 94.791 122.55.5 ! 1959.50.9 .033 48.124 62.21.9 994.82.8 iin porters :m