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Articles 53641 - 53670 of 53917

Full-Text Articles in Life Sciences

A Revision Of The Fox Squirrels Of The Lower Mississippi Valley And Texas, George H. Lowery Jr., William B. Davis Mar 1942

A Revision Of The Fox Squirrels Of The Lower Mississippi Valley And Texas, George H. Lowery Jr., William B. Davis

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.


Geology Of Dallas County Texas, Claude C. Albritton Jr. Dec 1941

Geology Of Dallas County Texas, Claude C. Albritton Jr.

Field and Laboratory

At the regular monthly noon meeting of the Dallas Petroleum Geologists on Monday, May 5, 1941, a motion was passed authorizing the president to appoint a committee to work on a project which would culminate in a bulletin on the geology of Dallas County, Texas, to be in printed form prior to the annual meeting of the American Association for the Advancement of Science to be held in Dallas, Texas from December 29, 1941 to January 3, 1942. Those members appointed to the general committee were Messrs. C. C. Albritton, Jr. of Southern Methodist University, Robert I. Seale of Schlumberger …


Dr. Benno Matthes: An Early Texas Herpetologist, S. W. Geiser May 1941

Dr. Benno Matthes: An Early Texas Herpetologist, S. W. Geiser

Field and Laboratory

Texas has long been known as the herpetologist's paradise. A large number of species are distributed through the great distances from Amarillo to Brownsville, and Texarkana to El Paso. Naturalists have collected reptiles for many years in the State; and Texan species are in museums throughout the world.


Stability Of Boulders On Slopes In The Finlay Mountains, Texas, Ben R. Howard Jr. May 1941

Stability Of Boulders On Slopes In The Finlay Mountains, Texas, Ben R. Howard Jr.

Field and Laboratory

In a recent note the writer and his associates showed that Indian petroglyphs might be used as criteria to indicate the stability of boulders resting on relatively steep slopes. Space did not permit a full account of the data which led to this suggestion. Accordingly, it is the purpose of this paper to amplify these data with a more complete description.


An Indian Camp Site In The Northern Finlay Mountains, Hudspeth County, Texas, Keith F. Walker, David W. Trexler May 1941

An Indian Camp Site In The Northern Finlay Mountains, Hudspeth County, Texas, Keith F. Walker, David W. Trexler

Field and Laboratory

During the summer of 1939 a geological field class from Southern Methodist University, working in the Finlay Mountains of Hudspeth County, Trans-Pecos Texas, was impressed by the number of old Indian camp sites. The following summer the authors on a similar trip to the same area were able to spend several days in studying one of these.


Geology Of The Eagle Spring Area, Eagle Mountain, Hudspeth County, Texas, J. Fred Smith Jr. May 1941

Geology Of The Eagle Spring Area, Eagle Mountain, Hudspeth County, Texas, J. Fred Smith Jr.

Field and Laboratory

The Eagle Spring area is on the northern flank of Eagle Mountain, a dissected mountain mass with a maximum elevation of 7,512 feet in southeastern Hudspeth County, Trans-Pecos Texas It is included on the Sierra Blanca and Eagle Mountain topographic quadrangles of the United States Geological Survey. Although the region includes only a small area, it is important geologically because it apparently has the same stratigraphic and structural relations to be found in the larger area of Eagle Mountain. It is on the northern border of the folded and thrust-faulted province that extends to the south into Mexico and to …


Lerodea Tyrtaeus (Ploetz), New To The United States (Lepidoptera, Rhopalocera, Hesperiidae), H. A. Freeman May 1941

Lerodea Tyrtaeus (Ploetz), New To The United States (Lepidoptera, Rhopalocera, Hesperiidae), H. A. Freeman

Field and Laboratory

On March 22, 1940, a female Lerodea tyrtaeus (Ploetz) was caught by the writer one mile north of West Columbia, Brazoria County, Texas.


A Celestial Globe, John D. Boon May 1941

A Celestial Globe, John D. Boon

Field and Laboratory

Nature is deceptive. Things that appear to be true are often untrue. This point is well illustrated in the science of astronomy. The history of astronomy is strewn with rejected theories that were once held by wise men. Even today many false theories that should have been discarded long ago are believed by many people. Why is this true?


Buried Hearths And Pottery In Alluvium Of The Finlay Mountains, Texas, Robert B. Mcconnell, J. J. Crim Jr. May 1941

Buried Hearths And Pottery In Alluvium Of The Finlay Mountains, Texas, Robert B. Mcconnell, J. J. Crim Jr.

Field and Laboratory

In the summer of 1940 hearths and artifacts were found buried in alluvium in the western Finlay Mountains of Texas. The sites occur along the banks of Campagrande Draw, approximately at 31° 24' north latitude, and 105° 37' 30" west longitude.


Front Matter Apr 1941

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.


Observations On Vitrified And Frozen Muscle Fibers In Polarized Light, Gregory Thoennes Apr 1941

Observations On Vitrified And Frozen Muscle Fibers In Polarized Light, Gregory Thoennes

Journal of the Minnesota Academy of Science

No abstract provided.


Nutrition Of The Wax Moth Larvae. Vitamin Requirement. I. Requirement For Vitamin B, Mykola H. Haydak Apr 1941

Nutrition Of The Wax Moth Larvae. Vitamin Requirement. I. Requirement For Vitamin B, Mykola H. Haydak

Journal of the Minnesota Academy of Science

No abstract provided.


Five Generations Of Cerebellar Ataxia In The Human And Possibilities Of Its Genetic Control, C. P. Oliver, R. Gray Apr 1941

Five Generations Of Cerebellar Ataxia In The Human And Possibilities Of Its Genetic Control, C. P. Oliver, R. Gray

Journal of the Minnesota Academy of Science

No abstract provided.


Abstract Papers Apr 1941

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.


Hardiness Of Woody Plants In Minnesota, H. E. Stork Apr 1941

Hardiness Of Woody Plants In Minnesota, H. E. Stork

Journal of the Minnesota Academy of Science

No abstract provided.


A Management Program For Minnesota Muskrat, Paul R. Highby Apr 1941

A Management Program For Minnesota Muskrat, Paul R. Highby

Journal of the Minnesota Academy of Science

No abstract provided.


Notes On Minnesota Ticks, William A. Riley Apr 1941

Notes On Minnesota Ticks, William A. Riley

Journal of the Minnesota Academy of Science

No abstract provided.


Notes On The Cave Bats Of Minnesota, G. N. Rysgaard Apr 1941

Notes On The Cave Bats Of Minnesota, G. N. Rysgaard

Journal of the Minnesota Academy of Science

No abstract provided.


Abstract Papers Apr 1941

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.


Back Matter Apr 1941

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.


The Interaction Of Certain Genes In Bristle Development Of Drosophila Melanogaster, Ray C. Anderson Apr 1941

The Interaction Of Certain Genes In Bristle Development Of Drosophila Melanogaster, Ray C. Anderson

Journal of the Minnesota Academy of Science

No abstract provided.


The Darters (Etheostominae) Of Minnesota, Kenneth D. Carlander Apr 1941

The Darters (Etheostominae) Of Minnesota, Kenneth D. Carlander

Journal of the Minnesota Academy of Science

No abstract provided.


The Relation Of Temperature And Snow Cover To Spring Bird Arrival, Ewart Grove Apr 1941

The Relation Of Temperature And Snow Cover To Spring Bird Arrival, Ewart Grove

Journal of the Minnesota Academy of Science

No abstract provided.


Increased Fertility In Drosophila In The Heterozygote Of Two Allelomorphs Each Homozygous Infertile, M. M. Green, C. P. Oliver Apr 1941

Increased Fertility In Drosophila In The Heterozygote Of Two Allelomorphs Each Homozygous Infertile, M. M. Green, C. P. Oliver

Journal of the Minnesota Academy of Science

No abstract provided.


Abstract Papers Apr 1941

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.


Noteworthy Arkansas Plants, Delzie Demaree Jan 1941

Noteworthy Arkansas Plants, Delzie Demaree

Journal of the Arkansas Academy of Science

The above list of fifty plants was presented before the Arkansas Academy meetings at Conway, 1939, Fayetteville, 1940, and at Arkadelphia, 1941. Eleocharis quadrangulata is the only one previously listed in an Arkansas check list, but no locality was given. It is not known by the writer from any other station than the above. The list comprises thirty-five genera, forty-eight species, twenty-six varieties, one form, and one hybrid.


New Species Of Ground Beetle Of The Genus Rhadine From An Arkansas Cave (Coleoptera: Carabidae), Milton W. Sanderson, Albert Miller Jan 1941

New Species Of Ground Beetle Of The Genus Rhadine From An Arkansas Cave (Coleoptera: Carabidae), Milton W. Sanderson, Albert Miller

Journal of the Arkansas Academy of Science

Rhadine ozarkensis is described as a new species of ground beetle from Fincher's Cave, Washington County, Arkansas. Two males and three females were collected in the twilight and total darkness zones between November 4, 1939 and January 20, 1940, form three liver baited traps set in the cave floor. This species is related to R. caudata (Lec.)


Comparison Of The Sensory Responses Of Polistes And Lucilia To Sugars, Cyril E. Abbott Jan 1941

Comparison Of The Sensory Responses Of Polistes And Lucilia To Sugars, Cyril E. Abbott

Journal of the Arkansas Academy of Science

No abstract provided.


Preliminary Report On The Legumes Of The Arkansas Uplands, Orrin J. Henbest Jan 1941

Preliminary Report On The Legumes Of The Arkansas Uplands, Orrin J. Henbest

Journal of the Arkansas Academy of Science

A brief discussion is presented on the ecologic, taxonomic, and economic features of the leguminous plants of the uplands occupying the northwestern half of Arkansas. The list of 37 genera and 115 species is compiled from the author's collection and from the specimens in the herbarium of the University of Arkansas collected in this part of the state. The geographic position of this area and its variety of ecological habitats indicate that it may yield nearly 175 species of legumes.


Some Notes On The Development And Regulation Of Heat Among Galleria Larvae, T. L. Smith Jan 1941

Some Notes On The Development And Regulation Of Heat Among Galleria Larvae, T. L. Smith

Journal of the Arkansas Academy of Science

No abstract provided.