No abstract
which may ,ll e used as found requisite, the object being in all cases to d, ispense with rivets as much as possible. Hence it is purposed to use sections of iron requiring little or no Boil 15 minutes, let liquor cool, enter wool, boil 10 minutes and draw off. No. 107.-CRIMSON. riveting.. When pneumatic power is employed to elevate and iower the gun, the wei � ht in its descent may be made to �ompress a volume of air m chambers such as are used fOJ holding compressed air, and this accumulated force may De supple mented by an additional. supply of compressed air, held in one or more auxiliary vessels, and furnishe<1 by hydraulic or steam power. The details and arrangements thus given Rre shown as apploicable to boats, vessels, and ships, Dut may be also applied to land forts or batteries, by substItuting the level of the fort or battery for that of the ship's deck.-The Engineer. rich contact vein on reaching the bottom of the porphyry and the top of the underlying limestone. That they will reach the limestone here admits of hardly' any doubt, as we see it cropping out on the hillside on the south side of Iowa Gulch in a large, thick ledge, pitching to the east. In this lime-8 lb. clean wool, stone ledge, near the top of it, is situated the celebrated' 1% 11. cudbear, Long & Derry, or Bana, mine, in which they are working % lb. Thomas' No. 33, a rich" stockwerk " in the limestone. That, at least, was Boil 10 minutes and add the character of the ore deposit a few months ago, at the 1 ounce eosine, time of my visit to this mine. A more particular description Boil 5 minutes, enter wool, boil 1 hour and raise with of this, as of other prominent mines of this district, I reserve % lb. alum, for future articles by myself or our friend Bauman. Boil 1 hour and draw off. After inspecting the Tiger, we continue our march farther east, and after passing the timber-line and over the porphyry 8 lb. clean wool, No. 108.-PINK. covered summit of Bald Mountain', ascend to the top of the THE ORE DEPOSITS OF LEADVILLE, COLO. mountain between Bald Mountain and Dyer Mountain. � lb. . cudbear, Here on this mountain-top we come to an outcrop of black % lb. Thomas' No. 33, By CARL HENRICH, E.M. limestone, hard and crystalline, a little more regularly strati-Boil 10 minutes and add fied than the one underlying the lower ore-beds and under-% ounce eosine, � lb. Thomas' No. 33, Boil 20 min'Qtes, «;lnter wool, Qoi1 t 110ur? qraw otf. S Ib. clean wool, 4 lb. fustic, No. 135.-SALMON. � lb. Thomas' No. 33, Boil 20 minutes and add � lb. alum, � ounce eosine, ' Boil 5 minutes, enter wool, boil 1 hour, draw off. 12 Ib. clean wool, 3 lb. fustie, No. 136.-SALMON. � lb. alum, � lb. Thomas' No. 33, 1 ounce cudbear, Boil 20 minutes, enter wool, boil 1 hour, draw off. 12 Ib. clean wool, 17!j l b. fustic, No. 137.-SALMoN.
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