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Articles 53371 - 53400 of 53612

Full-Text Articles in Life Sciences

Petrified Wood Compound Of Oxides Of Iron, L. B. Roberts Jan 1941

Petrified Wood Compound Of Oxides Of Iron, L. B. Roberts

Journal of the Arkansas Academy of Science

No abstract provided.


Studies On Oil Of Wintergreen Under The Microscope, L. B. Roberts, Edwin Roberts, Otto Ledford Jan 1941

Studies On Oil Of Wintergreen Under The Microscope, L. B. Roberts, Edwin Roberts, Otto Ledford

Journal of the Arkansas Academy of Science

No abstract provided.


Birds Of The Guadalupe Mountain Region Of Western Texas, Thomas D. Burleigh, George H. Lowery Jr. Aug 1940

Birds Of The Guadalupe Mountain Region Of Western Texas, Thomas D. Burleigh, George H. Lowery Jr.

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

No abstract provided.


Mammals Of The Guadalupe Mountains Of Western Texas, William B. Davis Jul 1940

Mammals Of The Guadalupe Mountains Of Western Texas, William B. Davis

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

No abstract provided.


The Highland Park Shopping Village: A Planned Sub-Retail Center, Carol F. King, Mary Grace Gillespie May 1940

The Highland Park Shopping Village: A Planned Sub-Retail Center, Carol F. King, Mary Grace Gillespie

Field and Laboratory

The purpose of this paper is to set forth the way in which a specific sub-retail center has been planned and built in order to more efficiently serve the trade territory on which it depends. The shopping center selected for study is one of several strikingly similar projects which are being developed in widely separated areas west of the Mississippi River. All have been in operation a relatively short period of time, each was begun almost immediately after the financial crisis of 1929, and each has been built to meet the demand by automobile trade for more accessible and less …


Abnormal Dentition In The Horse, Herbert Knutson May 1940

Abnormal Dentition In The Horse, Herbert Knutson

Field and Laboratory

In 1929 Dr. E. L. Rippy presented the Biology Department of Southern Methodist University with several ungulate skulls found near Kerrville, Texas. The writer noticed that one male horse skull has the left maxillary first molar extremely elongated, projecting twenty-eight millimeters beyond the normal distance between the fourth premolar and the second molar in the form of a wedge.


A Human Skeleton Found Near Carrollton, Texas, Claude C. Albritton Jr. May 1940

A Human Skeleton Found Near Carrollton, Texas, Claude C. Albritton Jr.

Field and Laboratory

Several months ago a human skeleton was taken from a gravel and sand pit in northwestern Dallas County. The bones were embedded in sand about 6 feet below the surface of a terrace spur on the south side of Denton Creek, a branch of Elm Fork of the Trinity River.


A Key To The Acrididae (Orthoptera) Of Northeastern Texas With Ecological Notes, Herbert Knutson May 1940

A Key To The Acrididae (Orthoptera) Of Northeastern Texas With Ecological Notes, Herbert Knutson

Field and Laboratory

No abstract provided.


Front Matter Apr 1940

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.


The Effect Of Environmental Factors Upon The Growth Rates Of Minnesota Fishes, Samuel Eddy, Kenneth D. Carlander Apr 1940

The Effect Of Environmental Factors Upon The Growth Rates Of Minnesota Fishes, Samuel Eddy, Kenneth D. Carlander

Journal of the Minnesota Academy of Science

No abstract provided.


Minnesota Lake Surveys And Fish Management, Samuel Eddy Apr 1940

Minnesota Lake Surveys And Fish Management, Samuel Eddy

Journal of the Minnesota Academy of Science

No abstract provided.


Experimental Simulation Of Winter Anaerobiosis, Raymond L. Lindeman Apr 1940

Experimental Simulation Of Winter Anaerobiosis, Raymond L. Lindeman

Journal of the Minnesota Academy of Science

No abstract provided.


Regional Plankton Studies In Minnesota, Charles B. Reif Apr 1940

Regional Plankton Studies In Minnesota, Charles B. Reif

Journal of the Minnesota Academy of Science

No abstract provided.


When Are Pine Cones Ripe?, Paul O. Rudolf Apr 1940

When Are Pine Cones Ripe?, Paul O. Rudolf

Journal of the Minnesota Academy of Science

No abstract provided.


Deer Inventory Studies In Minnesota, Gordon Fredine Apr 1940

Deer Inventory Studies In Minnesota, Gordon Fredine

Journal of the Minnesota Academy of Science

No abstract provided.


Further Studies On Prosthogonimus Macrorchis, Oviduct Fluke Of Poultry, With Special Reference To The Effect On Egg Production In The Ring-Necked Pheasant, Ralph W. Macy Apr 1940

Further Studies On Prosthogonimus Macrorchis, Oviduct Fluke Of Poultry, With Special Reference To The Effect On Egg Production In The Ring-Necked Pheasant, Ralph W. Macy

Journal of the Minnesota Academy of Science

No abstract provided.


Longevity Of Red Pine Seed, Eugene I. Roe Apr 1940

Longevity Of Red Pine Seed, Eugene I. Roe

Journal of the Minnesota Academy of Science

No abstract provided.


Abstract Papers Apr 1940

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.


Back Matter Apr 1940

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.


Noteworthy Plants From The Duluth Area, Olga Lakela Apr 1940

Noteworthy Plants From The Duluth Area, Olga Lakela

Journal of the Minnesota Academy of Science

No abstract provided.


River Terraces In The Carrollton Area, Dallas County, Texas, L. Gray Pattillo Jr. Jan 1940

River Terraces In The Carrollton Area, Dallas County, Texas, L. Gray Pattillo Jr.

Field and Laboratory

The Carrollton area is located in the northwestern part of Dallas County in the black prairie region of the Gulf Coast province of Texas. The area represented by the map covering approximately fifty square miles, is bounded on the north by the Dallas-Denton County line, on the south by the Joe Field road, on the east by meridian 96°45', and on the west by the 97th meridian.


Description Of The Rock City At Palo Pinto, Texas, With An Estimate On The Rate Of Rock Creep, Charles L. Mcnulty, Melville M. Mercer Jan 1940

Description Of The Rock City At Palo Pinto, Texas, With An Estimate On The Rate Of Rock Creep, Charles L. Mcnulty, Melville M. Mercer

Field and Laboratory

Approximately three miles west of Palo Pinto, Texas, on U. S. Highway 80, is a typical rock city known as Lovers' Retreat. The locality, one of several rock cities in Palo Pinto County, is roughly rectangular in shape and extends for a thousand feet or more along the north side of the highway. Lovers' Retreat is well known in Texas and people come from all parts of the state to picnic in the groves along Eagle Creek and to explore the narrow passsageways between the huge blocks of limestone on the north side of the stream.


Origin Of Some Channel Fillings In The Austin Formation Around Dallas, Texas, William Otis Ham Jr. Jan 1940

Origin Of Some Channel Fillings In The Austin Formation Around Dallas, Texas, William Otis Ham Jr.

Field and Laboratory

At many localities along the outcrop of the Austin formation in Dallas County, Texas, channel fillings apparently composed of reworked bedrock occur at levels above the highest stream terraces. If a post-Cretaceous chronology for this portion of Texas is to be formulated, these channel fillings must be taken into account. A more immediate problem, however, is that of the origin of the fillings themselves.


Hermaphroditism Among The Hesperiidae (Lepdoptera, Rhopalocera), H. A. Freeman Jan 1940

Hermaphroditism Among The Hesperiidae (Lepdoptera, Rhopalocera), H. A. Freeman

Field and Laboratory

While among the Lepidoptera hermaphroditism has previously been well known, this phenomenon has hitherto been considered unusual among the Skippers….Bell is of the opinion that hermaphroditism occurs more frequently among the Skippers than was previously thought. Since this rather obscure group of butterflies is often overlooked by the casual collector, it is easy to see why so few hermaphrodite Hesperiids have been collected and observed.


A Preliminary List Of The Odonata Of Dallas County Texas, Alice Ferguson Jan 1940

A Preliminary List Of The Odonata Of Dallas County Texas, Alice Ferguson

Field and Laboratory

Although advances have been made in past years in the study of many groups of Texas animals, little has been published on the Odonata.


Possibility Of An Additional Meteorite Crater Near Odessa, Texas, John D. Boon, Claude C. Albritton Jr. Jan 1940

Possibility Of An Additional Meteorite Crater Near Odessa, Texas, John D. Boon, Claude C. Albritton Jr.

Field and Laboratory

In the vicinity of Odessa meteorite crater are a number of sinks which, viewed from the air, closely resemble the crater in plan and general configuration. It is suggested that at least one of these sinks may be a meteorite crater modified, since the time of its formation, by the solvent action of ground water on the underlying bedrock.


Sequent Occupance In The Central City Area, Colorado, Mary Grace Gillespie Jan 1940

Sequent Occupance In The Central City Area, Colorado, Mary Grace Gillespie

Field and Laboratory

Man's desire for the precious metals has taken him into remote areas of the earth. This untiring search for gold lead to the exploration of the canyons of the Rocky Mountains. In 1859 there appeared in an isolated mountain valley of northern Colorado, a small settlement, later to be known as Central City, that boomed suddenly, lived brilliantly, and died quickly, only to be revived in 1932.


Petroglyph And Pictograph Site In The Finlay Mountains, Dodd N. Osburn Jan 1940

Petroglyph And Pictograph Site In The Finlay Mountains, Dodd N. Osburn

Field and Laboratory

In the Finlay Mountains at longitude 105° 39' west, and latitude 31° 23' north, Fort Hancock Sheet, Texas, there is a former Indian campsite located on the steeper face of a cuesta fronting the east. Crude natural shelters are formed by many of the boulders which bestrew the cuesta face. They were derived from the cap rock of Cox sandstone. Many of these boulders and the face of the cliff formed by the cap rock are covered with petroglyphs.


Free Radicals, Joe Adams Jan 1940

Free Radicals, Joe Adams

Field and Laboratory

Free radicals are complexes of abnormal valency, which possess additive properties, but do not carry an electrical charge and are not free ions. Since Lavoisier introduced his theory of radicals in 1785 there has been the conviction among chemists that the radicals of organic chemistry could be isolated in the free state.


Distributional Notes On Atrytone Dion, Race Alabamae Lindsey (Lepidoptera, Rhopalocera, Hesperiidae), H. A. Freeman Jan 1940

Distributional Notes On Atrytone Dion, Race Alabamae Lindsey (Lepidoptera, Rhopalocera, Hesperiidae), H. A. Freeman

Field and Laboratory

No abstract provided.