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Show 46 and the Cnlebra and Costilla on the west. In the valleys of all these, good irrigable land is fonnd. Grazing land extends over nearly the whole section, the grass being very fine. Timber is pine and spruce in the mountains, and pifion and cedar on the low hills. In Moreno and. Ute Valleys place and placer gold- mines are fonnd. Silver fonnd on Colorado Creek in sonthwestern part of sheet. Gold and silver on Baldy Peak in Taos Mountains. Coal and iron fonnd near Trinidad, and lignite croppings from Elizabeth-own to Trinidad in all canons. The little barren land lies above timber- line in the mountains. 70 C- Situated iu North Ceutral New Mexico. The western third is mountainous. It is well watered by the Canadian and its branches, Ciraarroucito, Rayado, Ocate, Sweetwater, and Mora, with its branches, the Sapello, Manuelitos, Cebolla, and Coyote, in the valleys of all of which is irrigable land capable of growing crops for three times the present population. The grazing is wonderfully good, winter and summer, throughout the whole area excepting a little above timber- line. Pine and spruce timber is found in main range and Turkey Mountains. There are ludications of silver, gold, and copper throughout the range, but no worked mints. Sheet 75.- Parts of Central and Western Arizona. Much brokeu by low mountains and mesas with no well- defined ranges. There are no long watersheds to make large streams. The water- supply is not great. The Colorado Chiquito in the northeast runs through a canon. Jfe The agricultural land is found mainly about small springs in vicinity of San Francisco Mountains, in Chi no and Williamson's Valley of the Rio Verde drainage, in vicinage of Camp Verde, about the heads of Bill Williams Fork, and on Hassayampa Creek and old Camp Date Creek and Skull Valley. Pine and pifion timber is found on the mountains and pifion on the lower hills. Grazing found in nearly all the valleys excepting in southwestern and northwestern part, where, as well as on the mountain- tops, it is arid. Place and plaoer- mifttf of gold and deposits of silver are found in the Bradshaw Mountains. BAROMETRIC HYPSOMETRY. Lieutenant Marshall submits a report on this subject showing the operations carried on daring the year, which have been principally with a view to the determination of altitudes alone, a large number of which have been fixed by both cistern and aneroid barometric measurements. A new set of instructions, eularged, revised, and improved by Lieutenant Marshall during the year, have been published, and are sufficient for a complete manual that will answer for a long time to come. ( See Appendix A.) Dr. O. Loew presents a report on the meteorological condition of the Mohave Desert, and compares the results of his observations with those made in other countries. The widely different climatic conditions existing in a comparatively limited area in Middle and Southern California make the observations of Dr. Loew of considerable value and interest. ( See Appendix B.) NATURAL HISTORY, Geology.- Prof. Jules Marcou submits a report on the geology of a portion of Southern Oalifoniia; Dr. O. Loew, on the geological and mineralogical character of Southern California and adjacent regions ; and Mr. A. R. Conkling, ou portions of New Mexico and Colorado. The field was not an entirely new one to Professor Marcou, he having visited the region in connection with the surveys for a Pacific railroad along the thirty- fifth parallel; yet his report herewith will be found to contain new and valuable information. ( See Appendix H 1.) Dr. Loew was for most of the season attached to the party of Lien-tenant Bergland, operating in connection with examinations to determine the feasibility of diverting the waters of the Colorado, and his notes on the geology and mineralogy of the region traversed, it is be- |
