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Some Effects Of Inorganic Fluoride On Plants, Animals, And Man, Delbert A. Greenwood

Faculty Honor Lectures

~~~ in the compounds of fluorine may be traced to one or more of the following factors: ( 1) the consumption of a drinking water containing one part per million of fluorine as a soluble flouride during the period of calcification and eruption of the teeth causes a reduction in the incidence of tooth decay; however, an intake of drinking water containing more than two parts per million of fluorine causes dental fluorosis of varying degrees in man and certain animals; (2) a continuous intake of excessive amounts of fluorine as mineral supplement, in contaminated forage, or the grazing of …

Geology Of The Preston Hollow Quadrangle (Dallas, Collin, And Denton Counties, Texas), George. W. B. Hall Jr.

Field and Laboratory

Bedrock in the Preston Hollow Quadrangle consists of the upper Eagle Ford shale and the middle marl and lower chalk members of the Austin formation. The area is situated upon a gentle homocline with the beds dipping 50 to 60 feet per mile to the southeast. The Eagle Ford is principally shale with interbedded thin layers of shaly limestone and sandy shale. The Austin formation is readily divisible into a lower chalk, which is a rather hard unit, and an overlying softer marly unit. There are, however, many hard chalky beds in the marl. Many thin layers of an argillaceous …

Notes On The Salamander, Eurycea Longicauda Guttolineata, In Florida, Donald W. Tuttle

Field and Laboratory

But little work has been published on this subspecies. This study is based on a collection made with Richard E. Etheridge in the summer of 1949. While Carr (1940) lists Eurycea l. guttolineata as uncom­ mon in Florida, we were able to collect some 180 specimens in the northern part of the State. These are now deposited in our private collections, or in the Tulane University collection.

Papers Presented At The 1952 Meeting Of The Society Of Student Geologists, George Waverly Hall Jr.

Field and Laboratory

Early this year, graduate students in the Geology Department of Southern Methodist University, aware that there was no adequate student group which could advocate and instigate a desired type of extracurricular geologic program, set about to put such a program in motion. They formed a club to be known as The Society of Student Geologists. They sought to begin a positive program of geologic activity, and to form a true honorary organization to recognize outstanding undergraduates in geology.

The Teaching Of Science, Sherwin Maeser

Faculty Honor Lectures

Like to teach! Whether with the expectant, half-frightened freshman, the senior, worried about his preparation now that . he must get out and meet competition, or the graduate student interested in new discoveries, I like to work with all of them.

I have been teaching a long time now. As has always been the case when one generation is thinking of turning over its work to the next, I am glad to have the opportunity to talk about some of the things that I consider important in this job of teaching.

The most varied and the most acute problems of …

Geology Of Whitney Reservoir Area, Brazos River, Bosque-Hill Counties, Texas, Arthur M. Hull

Fondren Science Series

Whitney Dam is located on the Brazos River (river mile 442.4) in Hill and Bosque counties, Texas, approximately 38 river miles upstream from Waco, McLennan County, Texas. The general location of the project is shown on plate 1. The site selected for development is located at river mile 442.4. Three other sites, located at river miles 471.0, 472.8, and 473.2 and designated Alternate Sites Numbered 3, 2, and 1, respectively, are described in this paper.

The Desert Shall Blossom As The Rose, D. Wynne Thorne

Faculty Honor Lectures

IRRIGATION AGRICULTURE has not received attention commensurate with its significance in either ancient or modem times. Although most ancient civilizations depended on irrigation for their very existence, one can consult volume after volume of history only to find irrigation scarcely mentioned. To the agricultural specialist the great challenge and the strength and weakness of irrigation agriculture is not in constructing Boulder Dams nor in planning winding canals and syphons to carry water from the Columbia River to California. The critical point is on the farms where water is applied to the soil and crops are harvested. There the real battles …

The Bunt Problem In Relation To Winter Wheat Breeding, Delmar C. Tingey

Faculty Honor Lectures

Man is forever in search of new and better crops. He has for centuries been a persistant and fairly successful plant . breeder. Ancient Chinese are credited with breeding superior varieties of rice and hybrid flowers. Indians in America produced remarkable varieties of corn, and it was not until modern corn breeders developed "hybrid corn" that they produced superior yielding varieties.

The discovery of Mendel's work on hybridization 50 years ago pointed the way to almost limitless possibilities in plant improvement through breeding. Mendel discovered that if two related individuals were hybridized, it was possible in later generations to obtain …

John Wright Glenn (1836-92), Early State Geologist Of Texas, S. W. Geiser

Field and Laboratory

The second State Geological Survey of Texas (the "Glenn­ Buckley survey") owed its establishment to an Act approved August 13, 1870 (supra). Over two years elapsed, however, before a state geologist was named. Finally, on March 31, 1873, Governor Edmund J. Davis appointed J. W. Glenn State Geologist. Charles Edward Hall of Albany, N. Y., was his assistant. This office Glenn held until March 6, 1874, when he resigned.

Farm Research In South Dakota: Fifty-Second Annual Station Report, July 1 1938 - June 30 1939, South Dakota State College Of Agriculture And Mechanic Arts

Agricultural Experiment Station and Research Farm Annual Reports

No abstract provided.