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Show 188 graphical results of the survey is not to be doubted, while each new geographical fact added, from year to year, is an increase to that common stock of knowledge that may finally be valuable to any and all human activity, and in which everybody is or should be interested. REPORTS. Since my last annual report the following special reports have appeared: 1. Preliminary Report of reconnaissance in Southern Nevada in 1869. 2. Progress report of 1872. 3. Report upon the Vertebrata of the Eocene of New Mexico. 4. Preliminary report upon the collection of invertebrate Fossils, for 1871,1872, and 1873. By act of June 23,1874, $ 25,000 was appropriated for engraving and printing the plates to illustrate the quarto volumes recommended in annual report for 1873 as the form for the expression of the matured results of the survey. By an amendment to the above act, approved February 15, 1875, the number of copies of each of the six volumes authorized by Congress to be published for the use of the War Department was two thousand. The MS. of two of these volumes, viz, Vol. I l l ( Geology) and Vol. V, ( Zoology,) has gone forward to the Government Printer. The greater part of the MS. of Vol. II ( Astronomy and Meteorology} is ready; of Vol. IV, ( Paleontology,) the report upon invertebrates is complete, and tnat upon vertebrates is well advanced. Vol. VI ( Botany) will be delayed, to embrace the results of the season of 1875. Vol. I is well advanced. The many plate- illustrations for these reports are in the hands of the lithographers. A catalogue of mean declinations of stars from 10° to 80° north declination, and for use in the determination of latitudes between the limits of 20° and 50° north latitude, is approaching completion in the hands of Prof. T. H. Safford. The only special report suggested for publication at an early date within the approaching fiscal year will comprise a collation of data giving routes, distances, geographical positions, altitudes, & c., over large areas in Colorado, New Mexico, Arizona, Utah, Nevada, and California. The following maps and reports pertaining to the survey have been published since its inception: MAPS. Preliminary map to accompany 1869 Report. Preliminary map to accompany 1871 Report. Skeleton map to accompany Progress Report for 1872. Progress map to accompany annual report for 1873. Progress map to accompauy annual report for 1W74. General Topographical Map, Index Map, Basin Map, Sheet of Conventional Signs, Legend Sheet, Atlas Sheets 49, 50, 57, 58, 59, 65, 66, 67, Crayon Atlas Sheets 50, 58, 59, 66, Geological Sheets 50, 58, 59, and 66. REPORTS. Preliminary Report, 1869; Preliminary Report, 1871; Camp Distances, 1871; Camp Distances, 1872; Progress Report, 1872; Astronomicar Report, 1873; Annotated list of the birds of Utah, 1873; on the Plagopt. eriuffi and Ichthyology of Utah, lo73j Astronomical Report, 1873; Catalogue of Plants, 1874 ; Report npon Ornithological Specimens, 1874; Report upon Vertebrate Fossils discovered in New Mexico, with description of new species, 1874; Preliminary Report upon Invertebrate Fossils, 1874 ; System* atic Catalogue of Vertebrata of the Eocene of New Mexico, 1875. PHOTOGRAPHS. A few selected stereoscopic and landscape photographic subjects have been printed during the year for the use of the War Department, Engineer Bureau, and this Office. Since valuable material embodying a description and partial history of the ancient and present aboriginal tribes of the southwestern portion of the Uuited States has been and is still being gathered. I have the honor to recommend that a seventh quarto volume be authorized to be devoted to the subjects of archaeology, ethnology, and philology, In order to carry out the projects contemplated in the publication of maps and reports for the ensuing fiscal year, I have the honor to recommend that au appropriation of $ 25,000 be asked. The probable distribution of the same will be as follows: For preparation and engraving and printing topographical atlas sheets . . $ 12,500 OO For preparation, engraving, and printing geological atlas sheets 5,000 00 For preparation, engraving, and printing of plate, photographic, and other illustrations 7,500 00 35,000 00 |