REPORT OF THE .SECRETARY. 95 



18«:}-'«4. F. W. Clarke, chief cbemist; T.M. Chatiird, iiH.sistaiit. 1884. 8°. 40 iip. 

 Price 5 cents. 



10. On the Cambrian Faunas of North America. Preliminary studies, by Charles 

 D. Walcott. 1884. 74 pp. 10 pi. Price 5 cents. 



The following are in press, viz : 



11. Ou the Quaternary and Kecont Mollusca of the Great Basin, with descriptions 

 of new forms, by R. Ellsworth Call ; introduced by a Sketch of the Quaternary Lakt s 

 of the Great Basin, by G. K. Gilbert. 18S4. 8°. 66 pp. 6 pi. 



12. A Crystallooraphic Study of the Thinolite of Lake Lahontan, by Edward S. 

 Dana. 1884. 8°. 34 pp. 3 pi. 



13. Boundaries of the United States and of the several States and Territories, by 

 Henry Gannett. 1885. 8°. pp. 



14. The Electrical and Magnetic Properties of the Iron-Carburets, by Carl Barus 

 and Vincent Strouhal. 1885. 8°. pp. 



15. Notes on the Mesozoic and Cenozoic Paleontology of California, by Charles A. 

 White. 1885. 8°. pp. 



16. The Higher Devonian Faunas of Ontario County, New York, by J. M. Clark. 

 1885. 8°. pp. 3 pi. 



STATISTICAL PAPERS. 



A fourth series of publications, having sjiecial reference to the mineral resources of 

 the United States, is contemplated. 



Of that series the first has been published, viz: 



Mineral Resources of the United States, by Albert Williams, jr. 1883. 8°. xvii, 

 813 pp. Price 50 cents. 



The second will shortly be ready for publication, viz: 



Mineral Statistics of the United States, 1883-'84. 



COLLECTIONS. 



During the year tbe collections of the Survey were increased by the 

 addition of 317 boxes of rocks, minerals, and fossils. This does not in- 

 clude the collections received at New Haven by Professor Marsh ; nor 

 the material collected by certain of the divisions of the Survey having 

 permanent headquarters elsewhere than in Washington, and held by 

 them temporarily for study. 



UNITED STATES FISH COMMISSION. 



As in previous years, 1 include in my report to the Board of Regents 

 the i^rincipal facts connected with the work prosecuted bj- the United 

 States Fish Commission during each year, as, under the ai>pointmeut 

 of the President, I exercise the function of United States Fish Com- 

 missioner. It is not necessary to go into any special detail in this con 

 nection, as the Reports and the Bulletins of the Commission contain a 

 full account of progress during the year. The reports for 1882 and 1883 

 bring the subject up to the end of the latter year; and the continuation 

 for 1884 consists, for the most i)art, in carrying out the plans already 

 initiated in some respe(!ts on a larger scale. 



Owing to the peculiarities of the season, the yield of eggs at the 

 shad-hatching stations near Washington was not as productive as iu 

 previous years. The young shad hatched from these eggs were car^- 



