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Show 1248 REPORT OF THE CHIEF OF ENGINEERS. Timber and wood abundant. Water at North Carson Mine is bronght from Virginia water- hoisting works. Main tapped If miles from Carson. There is one stage and several freight lines. Five churches, 2 school-houses, many stores, and 2 banking- houses. The Indians are those of the Washoe and Shoshone tribes, and are few in number. The principal silver- mining companies are the North Carson, Ayres and Hopkins, Gould and Barnhart, Ida Ayres, All Bight, Ayres's Consolidated, Huston, and Montreal and Emerald. These companies are incorporated under the laws of California. NATURAL, HISTORY. In geology, Mr. A. E. Conkling submits a report of his observations made in the Sierra Nevada, in the vicinity of Lake Tahoe and to the southward, and has collected a number of fossils. His report upon the results of an examination of a number of microscopical section of rocks from various localities is herewith. Mr. H. W. Henshaw has made an ornithological report as the result of his season's labor, and, as well, has collected specimens in other departments of zoology. The results from further examinations by Dr. J. T. Eothrock and Prof. F. W. Putnam, the one in botany, the other of the archaeological collections, with their colaborers, will appear in volumes 6 and 7. The following gives a list, as prepared by Mr. Henshaw, of the various lots and specimens forwarded by the expedition to the Smithsonian Institution; all of which have been donated to its museum, their practical importance to the survey having ceased with the examination and reports made thereupon. The list is taken from the records of this office and those of the Smithsonian Institution: List of natural- history collections forwarded to the Sniithaonian Institution during the years 1871 to 1876, inclusirc. Subjects. Vertebrate fossils \ J^ ™ 6 " ;; Invertebrate fossils specimens. Cru » Uua » i { lo^! ™ ""!: Molla « a { l^!" 1'"?: Mammals specimens. Birds and mammals, ( alcoholic,) specimens. Mammal crania specimens. Birds specimens. Bird crania, ( sterna, & o.) .. specimens. Bird- skeletons specimens. Bird- embryos specimens. Bird- nests specimens. Bird- eggs specimens. Keptiles, ( batrachians)... [ f ^ ^ f ; Fishes { K5!^!:: Hymenoptera Lepidoptera K ™ ? Diptera { l^ u!?.! ™ : Coleoptera { g^ ™ 1* Ortboptera \ Zs*" ™ : Arachnida { l ^ ™ ™ '. Botanical specimens { i S j ! ? ™ I 1871. 1872. 136 1,426 60 12 135 27 15 3 1,300 135 522 4 10 20 • 550 109 275 48 100 5 1873. 1,566 600 66 135 37 659 31 4 20 193 95U 192 850 109 450 43 288 144 50 13 4,500 240 500 48 250 26 1874. 250 250 23 5-> 3 1,055 22 6 It 750 140 650 91 4,200 211 1875. 500 1 100 1 1,000 95 43 26 18 793 9 14 750 153 800 116 790 483 162 1,200 18 100 16 1876. I Total j specimens. 200 ! 14 150 15 10 4 2 150 S 831 8 350 49 50 3 I 2,000 ' I 34 1 500 3,308 300 3,000 270 30 60 3,239 6rf 4 5 36 850 3,918 2,940 500 5 0 ' i 13, 300 5 0 0 ] 350 • 11,000 * Approximate. |