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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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January 1, 1949

The Magnet Cove Rutile Company mine, Hot Spring County, Arkansas

The Magnet Cove Rutile Company mine was mapped by the U.S. Geological Survey in November 1944. The pits are on the northern edge of Magnet Cove and have been excavated in the oxidized zone of highly weathered and altered volcanic agglomerate. The agglomerate is composed of altered mafic igneous rocks in a matrix of white to gray clay, a highly altered tuff. The agglomerate appears layered and is c

Authors

Douglas M. Kinney

January 1, 1949

The migration of the pintail

No abstract available.

Authors

S.H. Low

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1949

The New Almaden quicksilver mine, Santa Clara County, California

No abstract available.

Authors

E. H. Bailey, D.L. Everhart

January 1, 1949

The pegmatites of the Errington-Thiel mine, Elko County, Nevada

No abstract available.

Authors

E. Neal Hinrichs

January 1, 1949

The preparation of graphs for publication

This method may be helpful to many investigators where professional draftsmen are not available.

Authors

J.S. Gutsell

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1949

The present status of the United States commercial fisheries of the Great Lakes

This review of the trends in production on the Great Lakes suggests that great biological changes have taken place. The general abundance of the choicer varieties, and of some of the less choice fishes, has been lowered considerably; and the prospects are that this level will fall still farther. In addition, the niches occupied by these finer species in the lakes have not been filled by coarser

Authors

John Van Oosten

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1949

The purposes of mammal population studies

No abstract available.

Authors

D.L. Allen

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1949

The Sally Ann copper area, Ubehebe Peak quadrangle, Inyo County, California

No abstract available.

Authors

E. M. MacKevett

January 1, 1949

The salt (sodium chloride) requirements of growing bobwhite quail

In the two experiments involving 452 bobwhite quail chicks, seven diets containing the following salt supplements, were compared: No additional salt; 0.25 per cent KaCl; 0.50 per cent NaC1; 0.75per cent NaCl; 1.00 per cent NaCl; 0.25 per cent Na2SO4; and 0.50 per cent KCl. All four diets containing sodium chloride gave about equal results in bird-growth, and produced better weights than the diet c

Authors

R. B. Nestler

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 1949