id author title date pages extension mime words sentences flesch summary cache txt 38067 Unknown A Select Collection of Valuable and Curious Arts and Interesting Experiments, Which are Well Explained and Warranted Genuine and may be Performed Easily, Safely, and at Little Expense. .txt text/plain 26608 1331 76 solution in nitro-muriatic acid, (see 5,) by adding sulphate of iron till it is nearly dry; then wash it with water, and polish by rubbing over hot water, and immediately lay pieces of gold or silver leaf on equal parts of sulphate of copper and muriate of ammonia in water, and cold, wash it over with muriatic acid, diluted with two parts water, with an equal quantity of water, add as much mercury as the acid will of nitric acid, diluted with an equal quantity of water, add nearly an part nitric acid, with six or seven parts water.--Then wash the copper dry red ochre, and having rubbed the copper plate with a piece of pour on as much nitric acid, diluted with an equal quantity of water, TO CUT GLASS WITH A PIECE OF IRON.--Draw with a pencil on paper, glass with water, and lay a piece of paper upon the top of it; place ./cache/38067.txt ./txt/38067.txt