. Report of the Geological exploration of the fortieth parallel . Plate F Foundaiian Timber or Mortnr BlockT. Transverse Battery Posts,(r. G. Tie Ltitjs to secure ftrwiew. Wedge or Stamp Stem, or lifter. h. Stamp head e Shoe d Die t Tappet. c. Cam K Camshafi. P .Palley on Camshnfi. p Drivhifi pulley. k. I)niiii4) shaft. rrL. Tightener. y. g! Guides q. Baiter} covers. Ftg. 2. Scale;32 TEEATMENT OF THE COMSTOCK OEES. 207 shaft, which is placed directly in front of the batteries, and which recei

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. Report of the Geological exploration of the fortieth parallel . Plate F Foundaiian Timber or Mortnr BlockT. Transverse Battery Posts,(r. G. Tie Ltitjs to secure ftrwiew. Wedge or Stamp Stem, or lifter. h. Stamp head e Shoe d Die t Tappet. c. Cam K Camshafi. P .Palley on Camshnfi. p Drivhifi pulley. k. I)niiii4) shaft. rrL. Tightener. y. g! Guides q. Baiter} covers. Ftg. 2. Scale;32 TEEATMENT OF THE COMSTOCK OEES. 207 shaft, which is placed directly in front of the batteries, and which receives itsmotion from the driving power of the mill. The stamps move verticallybetween guides that form a part of the battery frame. Fig. 1, on Plate XIX, shows a front elevation, and Fig. 2, a transversesection, on the line A B of Fig. 1, of two five-stamp batteries, the severalparts of which are indicated by the table of reference accompanying thedrawing. The foundation for the batteries in stamp mills generally preferred inNevada, as well as in California, consists usuall

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Keywords: ., booksubjectbotany, booksubjectgeology, booksubjectpaleontology