APPENDIX TO THE EEPORT OF THE SECRETARY. 79 



rocts of the Carboniferous age, from Cretaceons strata, ISTos. 2, 3, and 

 4, and from overlying beds of the Lignitic group. 



From the Carboniferous formation, about seven hundred specimens 

 were obtained ; from the Cretaceous, five hundred, ilhistrating its in- 

 vertebrate fauna ; and from the coal-bearing Lignitic group, resting on 

 the black shales of Cretaceous stratum Ko. 4, about two hundred speci- 

 mens of fossil leaves. 



Zoological collections were mainly made by the party operating from 

 IS^orthern California northward, and illustrate the zoology of the area 

 extending from Camji Bidwell, California, to the Columbia Eiver, Ore- 

 gon. To this party IMr. H. W. Henshaw was attached as naturalist. 

 The collection made comprises upwards of three hundred specimens of 

 birds, specimens of fishes from most of the lakes and streams encoun- 

 tered , with Lepidoptera, OftJioptera, and numerous reptiles and Batra- 

 chians. 



The field season ended early in December. The work of this survey 

 has now covered, since its commencement in 1859, connected areas 

 reaching from the Columbia Eiver on the north to the Mexican border, 

 and from the 100th meridian, near Fort Dodge, to the Pacific Coast, near 

 Los Angeles, an area now exceeding 350,000 square miles. 



The publications during the year are as folio vvs : Vol. II, quarto series, 

 Astronomy and Barometric Hypsometry ; "A Catalogue of 2,018 Stars, 

 for Latitude Work West of the Mississippi," and ten of the regular atlas- 

 sheets. Vol. VI, quarto series, was in stereotype at the close of 1878 ; 

 a " List of Distances, Positions, Altitudes," &c., was well advanced in 

 printing ; and Vols. I and VII, of the quarto series, awaited the appear- 

 ance of Vol. VI. Seventeen atlas-sheets, also from work i)rior to 1878, 

 are in various stages of i)rogress. 



GEOGRAPHICAL AND GEOLOGICAL SURVEY OF THE ROCKY^ MOUNT- 

 AIN REGION, BY PROF. J. ^Y. POWELL. 



The labors of this survey have been continued during 1878. From 

 the return of the field-parties in the autumn of 1877 till July, 1878, the 

 entire cori)s remained in Washington, preparing the results of the field- 

 work for publication. In July, 1878, a division was sent to the field, 

 but a force was also retained at Washington to continue the ethno- 

 graphic work, and to complete and edit certain unfinished reports. 



The oiScL'-work thus acquired an exceptional importance as comi)ared 

 with the field-work, which, for the season of 1878, was placed in charge 

 of Mr. C. K. Gilbert, his principal assistants being Messrs. J. H. Een- 

 shaw, O. D. Wheeler, and S. II. Bodfish. 



Taking the field at Gunnison, Utah, in the early part of August, the 

 work was carried on by four independent parties till the middle of De- 

 cember, when the advance of winter made it necessary to disband them. 



The Kanab base-line, four and one-third miles long, has been care- 



