330 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



teen hundred specimens, are from rocks of the carboniferous 

 age, from cretaceous strata Nos. 2, 3, and 4, and from overly- 

 ing: beds of the lio-nitic croup. 



From the carboniferous formation about seven hundred 

 specimens were obtained; from the cretaceous, five hundred, 

 illustrating its invertebrate fauna; and from the coal-bearing 

 lignitic group resting on the black shales of cretaceous stra- 

 tum No. 4, about two hundred specimens of fossil leaves. 



Zoological collections were mainly made by the party op- 

 erating from Northern California northward, and illustrate 

 the zoology of the area extending from Camp Bid well, Cali- 

 fornia, to the Columbia River, Oregon. To this party Mr. 

 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 en- 

 countered with JLepidoptera, Orthoptera, and numerous rep- 

 tiles and Batrachians. 



The field season ended early in December. The work of 

 this survey has now covered, since its commencement in 1809, 

 connected areas reaching from the Columbia River 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 follows : Vol. II., 

 quarto series, Astronomy and Barometric Ilypsometry : "A 

 Catalogue of 2018 Stars, for Latitude Work West of the Mis- 

 sissippi," and ten of the regular atlas-sheets. Vol. VI., quar- 

 to series, was in stereotype at the close of 187S; a "List of 

 Distances, Positions, Altitudes," etc., was well advanced in 

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

 the appearance of Vol. VI. Seventeen atlas-sheets, also from 

 work prior to 1878, are in various stages of progress. 



During the past season the work of the United States Geo- 

 logical and Geographical Survey, under the direction of Pro- 

 fessor F. V. Hay den, was continued northward into portions 

 of Wyoming and Montana territories. 



The season for field work was very short, in consequence of 

 the appropriation of money not being made by Congress till 

 July ; yet the results were of considerable magnitude and im- 

 portance. The expedition was divided into four surveying 

 parties, one of which extended the primary triangulation to 



