Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
Simplified methods of preparation of photostatic copies and graphs (Mimeograph)
No abstract available at this time
Authors
S. F. Snieszko
Water resources of southeastern Bucks County, Pennsylvania
This report has been prepared as a contribution to the development of southeastern Bucks County, Pa. It summarizes available information on the water resources of this 90-square mile area and evaluates current supplies. Future development of the area may change both the available quantity and the quality of the water supply. The effective development of the area demands a continuing knowledge of t
Authors
Jack B. Graham, John W. Mangan, Walter F. White
In Memoriam: Albert Kenrick Fisher
Dr. Albert Kenrick Fisher, a Founder and Past President of the American Ornithologists' Union and one of its best known Fellows for nearly 65 years, died in Washington, D. C. on June 12, 1948, after a brief illness from circulatory complications that developed as a result of advanced age. With his passing, the American Ornithologists' Union has lost one of its last links with that eminent group o
Authors
F.M. Uhler
Biological effects of DDT applications on tidal salt marshes
No abstract available.
Authors
P. F. Springer, J.R. Webster
Biological effects of DDT applications on tidal salt marshes
No abstract available.
Authors
P. F. Springer, J.R. Webster
Wood mouse and box turtle populations in an area treated annually with DDT for five years
A 117-acre area of dense woodland on the Patuxent Research Refuge received an aerial application of DDT in oil at the rate of 2 pounds per acre gnnually for five years. DDT reached ground level in a much smaller amount (thousandths to hundredths of a pound per acre). Treatment was made during the first week of June of each year from 1945 through 1949. Field studies of the wood mouse population
Authors
L. F. Stickel
Distinctions between the snake genera Contia and Eirenis
Summary: Various workers have believed Contia to be related to or congeneric with either or both Sonora and Eirenis, the latter a genus of Western Asia. Study of hemipenes, teeth, and jaws indicates that these genera are not related to one another. The hemipenes of Eirenis modesta and Contia tenuis are described. Eirenis is thought to be a derivative of the racer group. Relationships of Cont
Authors
W. H. Stickel
Upper digestive tract trichomoniasis in mourning doves and other birds
No abstract available.
Authors
R. M. Stabler, Carlton M. Herman