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Show 31 vertebrates, in the Eocene of the Gallinas group in New Mexico; and a preliminary report of his results in this interesting field was submitted with the last anuual report; subsequently a special publication was made upon the Vertebrataaf the Eocene of Northern New Mexico. His report, nearly complete, upon the Vertebrata collected under his direction, and their relations with plates of new species, has been submitted, and will form apart of volume IV, ( Paleontology.) Dr. Loew has submitted during the year a report upon the composition of a number of miueral and hot springs in Southern Colorado and Northern New Mexico, embracing those of Manitou, Red Creek, and Pagosa, Colo., and Las Vegas and Abiquiu, N. Mex., which has been included in volume III, ( Geology.) Dr. C. A. White, of Bowdoin College, Brunswick, Me, has been engaged for the major part of the year in the identification of the species of invertebrate fossils collected in the seasons of 1871, 1872, and 1873. A preliminary report of his labors, giving descriptions of new species, was published in octavo form. His fiuished report has been received, and will be Part I of volume IV, ( Paleontology.) The number of species new to science was found to be fifty, and the report based upon material drawn from a field of extended and varying geographical distinctions has- been made complete and comprehensive. The services of Dr. Oscar Loew have been retained for the expedition of 1875, and be will accompany the party to the Colorado River; and the veteran geologist, Jules Marcou, joined the California section of the expedition at Los Angeles, Cal., where twenty- two years before be had passed while holding the appointment of geologist to the expedition under the command of Lieut. A. W. Whipple, Corps of Topographical Eugineers, for a survey for a railroad route along the thirty- fifth parallel. He will be assisted by Douglas A. Joy, a young graduate of the School of Mines, Columbia College, New York. Mr. A. R. Conkliug, a graduate of several years' standing from the Sheffield Scientific School of Yale College, accompanies party No. 3 of the Colorado section of the expedition, and will examine the mountain structure from the Spanish Peaks southward to the head of the Pecos. The appropriation for the coming fiscal year having been much reduced, the services of the several geological assistants will necessarily be temporary, unless the funds available after the assembling of Congress can be made adequate to the more vigorous prosecution of this adjunct of the survey. The manuscript for volume III ( Geology) was ready for the press early in the year; but owing to a defect in the law making appropriation for publication, the printing could not go forward until the defect was remedied. The proof is now being received. Proofs of four of the geological sheets to accompany the volume have been received, and four more are ready for, and are soon to be in the hands of, the engraver. MINERALOGY. J) r. Loew submits an interesting report ( see Appendix G 2) on the mineralogical features observed by him in New Mexico and Colorado, including tables of analyses of minerals, mineral waters, & c, to which are added notes and tables on climatology, temperature of rivers, creeks, and springs encountered. One hundred and sixty- five mining- districts have been examined by the officers and assistants of the survey during the past four years, with a view to obtaining specific information in regard thereto, particularly |
