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Articles 53401 - 53430 of 53612

Full-Text Articles in Life Sciences

Description Of Two New Birds From Western Texas, Thomas D. Burleigh, George H. Lowery Jr. Nov 1939

Description Of Two New Birds From Western Texas, Thomas D. Burleigh, George H. Lowery Jr.

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

No abstract provided.

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A New Kangaroo Rat Of The Dipodomys Ordii Group From The Big Bend Region Of Texas, Monroe D. Bryant Nov 1939

A New Kangaroo Rat Of The Dipodomys Ordii Group From The Big Bend Region Of Texas, Monroe D. Bryant

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

No abstract provided.

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Geographic Races Of The Kangaroo Rat, Dipodomys Microps, E. Raymond Hall, Frederick H. Dale Nov 1939

Geographic Races Of The Kangaroo Rat, Dipodomys Microps, E. Raymond Hall, Frederick H. Dale

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

No abstract provided.

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Oil Provinces Of Colombia And Venezuela, William R. Ransone May 1939

Oil Provinces Of Colombia And Venezuela, William R. Ransone

Field and Laboratory

Colombia and Venezuela are by far the most important oil producing countries of South America. In 1938, Venezuela ranked third among the oil producing countries of the world, with a yield of 190,000,000 barrels. Only the United States (1,265,000,000 barrels), and Russia (210,000,000 barrels) outrank that country. Colombia, with 22,000,000 barrels was ninth among the petroleum producing countries of the world.

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Drainage Controls In The Austin Chalk Cuesta Area Of Dallas, Texas, E. F. Blakemore Jr. May 1939

Drainage Controls In The Austin Chalk Cuesta Area Of Dallas, Texas, E. F. Blakemore Jr.

Field and Laboratory

The Austin chalk cuesta is a prominent topographic feature which trends northeast across central Texas from Austin through Waco and Dallas. The escarpment is formed through differential erosion of beds at the contact between the Austin chalk and Eagle Ford: shale, the overlying chalk forming the cuesta. The area described in this paper is situated 6 miles west of Dallas, south of the Trinity River Cross Valley.

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Bionomics Of The Aquatic And Semi-Aquatic Hemiptera Of Dallas County, Texas, Dick D. Millspaugh May 1939

Bionomics Of The Aquatic And Semi-Aquatic Hemiptera Of Dallas County, Texas, Dick D. Millspaugh

Field and Laboratory

Although (as Professor S. W. Geiser has shown in his publications on scientific study and exploration in Early Texas) a number of naturalists and entomological collectors have worked in Texas, and some of them (like Jacob Boll, Gideon Lincecum, J. D. Mitchell, A. C. V. Schott, G. W. Belfrage, E. A. Schwarz and F. A. Schaupp) have made notable contributions toward our first knowledge of the insect fauna of Texas, either by collection of specimens sent to monographers and specialists, or by publication, still, on several groups our information is meager. Among these groups are the aquatic and semi-aquatic Hemiptera.

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Front Matter Apr 1939

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.

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A List Of Birds Observed On The 1938 Semple Expedition To Northeastern México, George M. Sutton, Thomas D. Burleigh Apr 1939

A List Of Birds Observed On The 1938 Semple Expedition To Northeastern México, George M. Sutton, Thomas D. Burleigh

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

No abstract provided.

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The Importance Of Local Mosquito Surveys In Minnesota, William A. Riley Apr 1939

The Importance Of Local Mosquito Surveys In Minnesota, William A. Riley

Journal of the Minnesota Academy of Science

No abstract provided.

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A Peripheral Vascular System As Seen By Means Of A Clark Window In The Ear Of The Rabbit, T. H. Seldon, R. H. Barrett, H. E. Essex Apr 1939

A Peripheral Vascular System As Seen By Means Of A Clark Window In The Ear Of The Rabbit, T. H. Seldon, R. H. Barrett, H. E. Essex

Journal of the Minnesota Academy of Science

No abstract provided.

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A Human Hereditary Trait Appearing In Offspring From A Cousin-Marriage, C. P. Oliver Apr 1939

A Human Hereditary Trait Appearing In Offspring From A Cousin-Marriage, C. P. Oliver

Journal of the Minnesota Academy of Science

No abstract provided.

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Star-Recessive, A Spontaneous Mutation In Drosophila Melanogaster, Edward B. Lewis Apr 1939

Star-Recessive, A Spontaneous Mutation In Drosophila Melanogaster, Edward B. Lewis

Journal of the Minnesota Academy of Science

No abstract provided.

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A Key To Snakes Of Minnesota, Milton D. Thompson Apr 1939

A Key To Snakes Of Minnesota, Milton D. Thompson

Journal of the Minnesota Academy of Science

No abstract provided.

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Adrenaline, Insulin, Potassium, And Phosphorus In Carbohydrate Metabolism, J. Clifford Stickney Apr 1939

Adrenaline, Insulin, Potassium, And Phosphorus In Carbohydrate Metabolism, J. Clifford Stickney

Journal of the Minnesota Academy of Science

No abstract provided.

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A Contribution To The Knowledge Of The Minnesota Flora, John W. Moore Apr 1939

A Contribution To The Knowledge Of The Minnesota Flora, John W. Moore

Journal of the Minnesota Academy of Science

No abstract provided.

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Growth Substances And Nutrition Of Protozoa, Alfred M. Elliott Apr 1939

Growth Substances And Nutrition Of Protozoa, Alfred M. Elliott

Journal of the Minnesota Academy of Science

No abstract provided.

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Light And Pituitary Activity In The Bird, Adolph R. Ringoen Apr 1939

Light And Pituitary Activity In The Bird, Adolph R. Ringoen

Journal of the Minnesota Academy of Science

No abstract provided.

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The Role Of Forest Fires In The Reproduction Of Black Spruce, R. K. Lebarron Apr 1939

The Role Of Forest Fires In The Reproduction Of Black Spruce, R. K. Lebarron

Journal of the Minnesota Academy of Science

No abstract provided.

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The Cellular Changes Induced In The Testes Of The Albino Rat By Artificial Cryptorchidism And X-Radiation, Arthur J. Gatz Apr 1939

The Cellular Changes Induced In The Testes Of The Albino Rat By Artificial Cryptorchidism And X-Radiation, Arthur J. Gatz

Journal of the Minnesota Academy of Science

No abstract provided.

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The Growth Rate Of Wall-Eyed Pike (Stizostedion Vitreum (Mitchill) In Various Lakes Of Minnesota, Samuel Eddy, Kenneth Carlander Mar 1939

The Growth Rate Of Wall-Eyed Pike (Stizostedion Vitreum (Mitchill) In Various Lakes Of Minnesota, Samuel Eddy, Kenneth Carlander

Journal of the Minnesota Academy of Science

No abstract provided.

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Incidence Of Infection Of Fish With Clinostomum Marginatum In Northern Minnesota, Walter C. Schuling Mar 1939

Incidence Of Infection Of Fish With Clinostomum Marginatum In Northern Minnesota, Walter C. Schuling

Journal of the Minnesota Academy of Science

No abstract provided.

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A New Peromyscus From Texas, William B. Davis Feb 1939

A New Peromyscus From Texas, William B. Davis

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

No abstract provided.

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The Meteorite:A Lecture To Students Of Elementary Geology, John D. Boon Jan 1939

The Meteorite:A Lecture To Students Of Elementary Geology, John D. Boon

Field and Laboratory

I have at hand a chunk of iron that was found on the rim of Meteor Crater in Arizona. Whence came this mass of metal that is unlike terrestrial rocks, and what is the story it tells?

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Origin Of The Menard "Crater", Emmett Blakemore Jan 1939

Origin Of The Menard "Crater", Emmett Blakemore

Field and Laboratory

On August 30, 1938, the foreman of the Wilkerson Ranch twelve miles southwest of Menard, Texas, reported that a meteorite fell on the ranch and created a large crater. The story, widely publicized by newspapers, caused the writer, accompanied by Professor J. D. Boon of Southern Methodist University, to investigate this phenomenon.

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The Hesperiidae Of Dallas County, Texas, Avery Freeman Jan 1939

The Hesperiidae Of Dallas County, Texas, Avery Freeman

Field and Laboratory

Little is known concerning the Hesperiidae of the Southwest. In Texas, various early naturalists made extensive collections of insects, but none specialized on Lepidoptera.

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A Century Of Scientific Exploration In Texas, Part Ib: 1820-1880, S. W. Geiser Jan 1939

A Century Of Scientific Exploration In Texas, Part Ib: 1820-1880, S. W. Geiser

Field and Laboratory

In the fourth volume of this journal, I published a list, with short biographical notices, of naturalists and men of science who worked in Texas from 1820 to 1880. In that paper I promised a second contribution, to deal with naturalist-collectors and students in Texas during the years 1881-1920, thus rounding out a century of scientific study and exploration in the State.

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An Annotated List Of Snails From Texas And Northern Mexico Collected By C. D. Orchard, E. P. Cheatum Jan 1939

An Annotated List Of Snails From Texas And Northern Mexico Collected By C. D. Orchard, E. P. Cheatum

Field and Laboratory

A collection of land and fresh-water shells, principally from central, southern and southwestern Texas counties, with a few lots from Mexico, has been sent to me by Mr. C. D. Orchard, of San Antonio. Each lot was accompanied by ecological data; and since there were many intergrading forms, the following annotated list may be interesting and useful to field zoologists and systematists.

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Geographic Factors In The Development Of The Fredericksburg Area, Carol Fritz Jan 1939

Geographic Factors In The Development Of The Fredericksburg Area, Carol Fritz

Field and Laboratory

As a result of economic stress in Central Europe following the Napoleonic Wars and the industrialization of the Rhine region, the Mainzer Verein-a society of nobles-was organized in Germany in 1844 to direct and protect German emigration. After considering several regions as possible locations for its future colonies, the Society ultimately decided upon an unoccupied section of central Texas. This decision resulted from a favorable report by the Company's agent, Prince Victor von Leiningen, despite the fact that another agent, Count von Boos-Waldeck, advised against settling the Texas area because of the expense of transportation and lack of protection from …

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A New Grackle Of The Cassidix Mexicanus Group, George H. Lowery Jr. May 1938

A New Grackle Of The Cassidix Mexicanus Group, George H. Lowery Jr.

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

No abstract provided.

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Front Matter Apr 1938

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.

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