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Tous les autres exemplaires originaux sont filmto en commenpant par la premiere page qui comporte une empreinte d'impression ou d'illustration et en terminant par la derniAre page qui comporte une teiie empreinte. Un des symboles suivants apparaitra sur la darnlAre image de cheque microfiche, selon le cas: le symbole — ► signifie "A SUIVRE ", le symbole V signifie "FIN". Les cartes, planches, tableaux, etc., peuvent dtre filmAs A dos taux de reduction diff^rents. Lorsque le document est trop grand pour dtre reproduit en un seul clich6, 11 est film* A partir de Tangle supArieur gauche, de gauche d droite, et da haut en bas, en prenant le nombre d'images nAcessaire. Les diagrammes suivants illustrent la mAthode. / hn/^' ^J^'"'^'-' ru t t Washington, September 18, 1882. WVLLACE'S INTRENCHING TOOL fLo- BY Majou N. W. WALLACE, 1st Battauon K/R-'r. 'Corps, (iJ,.o»jyjiyMIHi;!IIJJI)llLllll.lL[iUl i lMl i miH* ii Li ( From the Journal of th&.Jioi^al-JJnUe(L Service Institution. ) It is not luv intention this afternoon to take up the few minutes allotted to me in aavoc'tingtl.: absolute necessity for shelter in the tieUl iron, moaorn breech- '"" ™s'""artmittea by all who have stu.lie.l the question. Taking that faet as ,.v s arth t S I will so on at once to show how, in my opinion such shelter my staitni- point, i mu ^ offectual wav. Foreign nations long ago becnnenlneto lieimiw an^ ascertain, tliu most, and ,„^i„l tools .-an ici oitluT on nntlM or by transport or on tho person ,ntr,i clnns ools. '•"■<»' , i„„,j,,,,„i tl,e nnuiLcr carriert per T,f b, n . ti^'n -1. I i" '"^l it is sai.l tl.at tbe »-ant of tools was so severely ,■;;; ;:;t;ue :":»•»:» anven to nse .belr cooking tttenslU a, snbstttntes. Cbc "■'■r ir r:,;;r:o;;r:''a;::irin Anterica, o».in« .o ^.^.o.^.^ »„. , , n. tbe sn„lc on every possible occasion, were cUristencd -tbe masters !;^«:e r ,f lil i K." AtulM »as sai,l, t believe, of .be Anstvians tbat"a ot the art ot (iiKr-'"n- spade." Hitherto our army has ;::;r ;:;\be enemy n, a. ope. Tins. nbe.^^^ n,r.,rcncb exerctsc a PjU- <^t^^^ n^^^^^ I;;:;;;;!!.;;::,:;:',;,™™ ;,"'; ,1;::. .liK^in. anJHc/i, loophole walls. The tool which I have the pleasure of showing you this afternoon has passed through these tests under the supervision of Col. Sir Andrew Clarke and the l{oyal Engineers' Committee. U: >(^. \ V ■^ \, J^.2. As a specimen of these ofdcial trials it will be enough to say that in ordinary soil a shelter jn7 was dug in six minutes and a shelter trench in twenty minutes. On a consolidated parade ground one hour proved enough for the regulated trench; gun-pits and epaulements were thrown up, and, as an experiment, a 1-t-inch brick wall, strongly constructed, was loopholed in forty minutes. The proposed trials on a large scale, which I am glad it will have in the coming maneuvers will doubtless yield some useful hints for further improvements of the tool, and my suggested mode of carrying it, which I shall gladly avail myself of, whether I am permitted to have the advantage of witnessing the maneuvers or not. I suggest it will be found useful not only for cavalry— where it saves consid- erable weight — and infantry in the field and camp life — for marines and naval brigade on shore, but also for steam launches, for mining purposes, and for car- riage or gun limbers. I have also adapted it for the use of the Ordnance Survey by the addition of a hammer and bill-hook (Fig. 2), and in this form I think it coidd with advantage be carried either by the pioneers or by a proportion of the rank and file. In conclusion, let me say that 1 do not propose that this small tool, weighing about 2.^ lbs., and measuring 23 inches in length, should take the place of the heavier and more powerful service pick and shovel; still less do I claim for it perfection or indestructibility. A tool so limited in weight and size cannot reasonably be expected to bear anythinfi and do everything which the British soldier may be pleased to require of it ; simple as it looks it is not so easy to make. But I do not hesitate to say that when made with care, and of the best material, as are all which my contractors, Messrs. Lucas & Sou, have turned out, it is a marvel of strength and poicer for its -Tirt r i-^i r-'^'f i i "- ^ '--i.n^-rM /m'^--^^--- X V. X u. v> V V* 3 ./«i/f iiiid wcijilit, and most coiivciiiciit fur its hiUHliiicss iiiid yriii'iiil adaptaliility, and I am saii<;uiii(' that it will rnllill my rxpcctatioiis and Jiistily tlif piod (»iiiiiioii lormi'd of it by tlif many friends \vln> have taki-n an interest in it, and by tlie (jivil and military enjiineers who have tried it. The thanks of the meetinjx were voted to Majoi' Wallace for biin<:in<; his invention to their notice. f^ \ OKDNANCK OFFICE, Washino'I'ON. Septeuiher is, ISSI*. Publication authorized by the Skcretary ok Wak : S. V. r.ENl^T, Jiri(i