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Meteorite Craters And Their Possible Relationship To "Cryptovolcanic Structures", John D. Boon, Claude C. Albritton Jr.
Meteorite Craters And Their Possible Relationship To "Cryptovolcanic Structures", John D. Boon, Claude C. Albritton Jr.
Field and Laboratory
The increasing number of recognized meteorite craters indicates that these features are not so rare as formerly believed. It is probable, moreover, that meteorite craters of the geologic past were larger and more abundant than the relatively recent examples. Evidence for the fall of ancient meteorites must be sought, however, in geologic structures produced by impacts.
Practical Methods In Phase Rule Study: Transition Temperatures From Electromotive Force Measurements, V. Metler
Practical Methods In Phase Rule Study: Transition Temperatures From Electromotive Force Measurements, V. Metler
Field and Laboratory
The methods available for the determination of transition temperatures have been classed by Findlay under seven heads: (1) dilatometric methods, (2) vapor pressure methods, (3) solubility measurement methods, (4) latent heat measurement methods, (5) optical methods, (6) viscosimetric methods, and (7) electrical methods.
A Gastropod New To The United States, Elmer P. Cheatum
A Gastropod New To The United States, Elmer P. Cheatum
Field and Laboratory
A species of branchiate snail new to the molluscan fauna of the United States, Hydrobia palomasensis (Pils.) (fide Pilsbry), was collected near Fort Davis, Texas, in April, 1936, by Mr. Ottys Sanders of Dallas. The specimens were found in a small canyon opening into Limpia Canyon, about five miles north of Fort Davis. The present writer, on a trip to this same locality last September, found this species in abundance.
Chemistry At The Texas Centennial Exposition, E. O. Heuse
Chemistry At The Texas Centennial Exposition, E. O. Heuse
Field and Laboratory
Although the Texas Centennial Exposition does not have an entire building devoted exclusively to science, there are many scientific exhibits and several of special importance to any one interested in chemistry. Such exhibits may be found in the Transportation Building, the Varied Industries Building and the Ford Building.
The Frank Carney Collection Of Maps, Edwin J. Foscue
The Frank Carney Collection Of Maps, Edwin J. Foscue
Field and Laboratory
The Department of Geology and Geography of Southern Methodist University has been fortunate in securing the entire collection of wall maps from the private library of the late Doctor Frank Carney, sometime Professor of Geology and Geography at Baylor University, Waco, Texas, and formerly of Denison University, Granville, Ohio.
Shell Repair In Polygyra Texasiana, Elmer P. Cheatum
Shell Repair In Polygyra Texasiana, Elmer P. Cheatum
Field and Laboratory
It has long been known, on the basis of field observations and laboratory experiments, that snails and clams are able to repair breaks in their shells. However, with the exception of Andrews' ('34, '35) excellent work on shell-repair of West Indian gastropoda, and Daniel's ('12) studies, practically all observations have been made upon European mollusks.
The Influence Of The Shoreline, Rivers And Springs On The Settlement And Early Development Of Texas, Ellis W. Shuler
The Influence Of The Shoreline, Rivers And Springs On The Settlement And Early Development Of Texas, Ellis W. Shuler
Field and Laboratory
A comparison of early colonial settlements in New England and Texas during the middle of the eighteenth century shows a decided contrast in their locations. In New England the colonists settled along the coast, in Texas along a line roughly parallel to the coast but about one hundred miles into the interior. This distribution, coast line and interior, is all the more striking since in Florida and the West Indies the Spanish colonists, just as the English in New England, settled along the sea margin.
Transportation Adjustments To Topography In Dallas, Texas, Edwin J. Foscue
Transportation Adjustments To Topography In Dallas, Texas, Edwin J. Foscue
Field and Laboratory
The outstanding physiographic feature of Dallas County is the White Rock Cuesta, which marks the western edge of the Austin Chalk limestone. Immediately below the chalk lies the easily eroded Eagle Ford Shale, hence the contact between the two strata is clearly marked by this westward facing cuesta, which extends from the southwest corner of the county to the middle northern border. The Trinity River, an antecedent stream, has cut a gap through the cuesta about midway between the northern and southern boundaries of the county…. The gap through the cuesta, and the narrowing of the Trinity River flood plain, …
The Araneida Of Dallas County: Preliminary Note, Sarah E. Jones
The Araneida Of Dallas County: Preliminary Note, Sarah E. Jones
Field and Laboratory
Little is known of the. Araneida of the Southwest. The Peckhams (1909) made an excellent report on the jumping spiders of Austin, Te:x:as, and vicinity. The report on "Oklahoma Spiders" by Banks, Newport, and Bird (1932) is also helpful. This is particularly true for the northern part of Texas, for many of our species are listed in that report. Other miscellaneous publications, such as those on new species by W. J. Gertsch (1932-33) have added to our knowledge of the spider-fauna of this section. The present report is an abstract of a preliminary survey of Dallas County Araneida. The work …
Ichthyc Oil, John A. Riddick
Ichthyc Oil, John A. Riddick
Field and Laboratory
In the vicinity of Seefeld, in the Austrian Tyrol at an altitude of 1,000 meters lies a rock formation known geologically as Seefeld shale. It is found in veins varying in thick ness from 20 cm. to 100 cm. Enveloping this shale is the Gall enstein formation containing many fossil gastropods. The occurrence of this particular mollusk in large quantities dates the formation as Silurian. The Seefeld formation is a specific bituminous shale which yields a crude oil from which Ichtyhol is made. Centuries ago, the Tyrolian peasants would collect this shale, boil it with water in large pots, and …
A Century Of Scientific Exploration In Texas Part 1: 1820-1880, S. W. Geiser
A Century Of Scientific Exploration In Texas Part 1: 1820-1880, S. W. Geiser
Field and Laboratory
Science evolves and is perfected by the patient and criti cal labors of generations of investigators; and scientific progress is marked by an unending series of publications. To this fact, indeed, is due the perennial interest of the History of Science…. Texas has an almost unique place in the history of scientific exploration. This is probably owing to a number of singular coincidences.
The Impact Of Meteors, John D. Boon
The Impact Of Meteors, John D. Boon
Field and Laboratory
Energy changes that occur when a meteor strikes the surface of the earth or the moon, are difficult to determine. The velocity of meteors is so much greater than that of molar masses with which we are familiar, such as projectiles of high powered rifles, that there is little basis for comparison.