Open Access. Powered by Scholars. Published by Universities.®
- Keyword
Articles 1 - 30 of 462
Full-Text Articles in Entire DC Network
Men Of Science In Texas, 1820-1880: V, S. W. Geiser
Men Of Science In Texas, 1820-1880: V, S. W. Geiser
Field and Laboratory
A collection of short biographies of naturalists in Texas during the years 1829 thru 1880, from Norris to Zink.
The Natural History Of Necturus: Iii. Food And Feeding, Joseph P. Harris Jr.
The Natural History Of Necturus: Iii. Food And Feeding, Joseph P. Harris Jr.
Field and Laboratory
Necturus normally forage at night, when they leave their favored hiding places and move slowly over the bottom seeking food. Slow, undulating movements of the tail propel them; the legs seem scarcely used.
A New Center For Scientific Studies In The Southwest, Claude C. Albritton Jr.
A New Center For Scientific Studies In The Southwest, Claude C. Albritton Jr.
Field and Laboratory
On October 14, 1957, the charter of The Graduate Research Center, Inc. was approved and filed in the Office of the Secretary of State at Austin, Texas. In the words of the charter, "this corporation is formed to support and encourage the advancement of knowledge in the pure and applied sciences, and to aid in the conduct of research and investigations in those fields at Southern Methodist University."
Men Of Science In Texas, 1820-1880: Iv, S. W. Geiser
Men Of Science In Texas, 1820-1880: Iv, S. W. Geiser
Field and Laboratory
A collection of short biographies of naturalists in Texas during the years 1829 thru 1880, from Ker to Nichols.
The First Noted Occurence Of Dasypus Bellus In Texas, Bob H. Slaughter
The First Noted Occurence Of Dasypus Bellus In Texas, Bob H. Slaughter
Field and Laboratory
A small group of persons, "The Dallas Prehistorical Society", has for several years been collecting fossil bones from the sec-ond of a series of alluvial terraces of the Trinity River. We have assembled a rather extensive fauna. Our fauna! list has not been published in full, although some specimens have been reported as new species. As some time will elapse before the fauna! paper will be ready for publication, it seems well to report here the first Texas record of Dasypus bellus (Simpson).
The Natural History Of Necturus: Ii, Joseph P. Harris Jr.
The Natural History Of Necturus: Ii, Joseph P. Harris Jr.
Field and Laboratory
Necturus has permanent external gills, simple internal lungs, and a skin well supplied with blood vessels; all of which have been reported functional in respiration.
Foraminiferal Populations Of The Goodland Formation, Tarrant County, Texas, Leslie R. Beddoes Jr.
Foraminiferal Populations Of The Goodland Formation, Tarrant County, Texas, Leslie R. Beddoes Jr.
Field and Laboratory
Recent studies of foraminiferal populations of the Gulf of Mexico made by Phleger (1951 and 1954), Parker, et al. (1953) , Lowman (1949), and Shepard and Moore (1955) show that different kinds of Foraminifera inhabit waters of different depth, salinity and temperature. These studies should provide evidence from which micropaleontologists may infer the nature of ancient environments, assuming always that fossil Foraminifera had the same habits as their nearest of kin in the modern assemblages. Albritton, et al. (1954) and Curtis (1955) have made quantitative studies of ancient populations, and have found that the Foraminifera tend to corroborate and supplement …
Men Of Science In Texas, 1820-1889: Iii, S. W. Geiser
Men Of Science In Texas, 1820-1889: Iii, S. W. Geiser
Field and Laboratory
A collection of short biographies of naturalists in Texas during the years 1829 thru 1880, from Huff to Kenney.
Note: Observations Of Captive Hog-Nosed Snakes, Heterodon Platyrhinos Platyrhinos Latreille, William B. Stallcup
Note: Observations Of Captive Hog-Nosed Snakes, Heterodon Platyrhinos Platyrhinos Latreille, William B. Stallcup
Field and Laboratory
No abstract provided.
Men Of Science In Texas, 1820-1880: Ii, S. W. Geiser
Men Of Science In Texas, 1820-1880: Ii, S. W. Geiser
Field and Laboratory
In the last issue of Field & Laboratory (26, 86-139) appeared the first 331 sketches (Abadie to Gilbert) of collectors, explorers, and observers, in a series that will extend through several issues. My fears of omissions were justified: I find that a sketch of Samuel Botsford Buckley (1809-84), a graduate of Wesleyan University in Connecticut, and twice State Geologist of Texas (1866-7 and 1874-5) was unaccountably omitted. This omission is the more notable since for twenty years I have been holding in abeyance the publication of a sketch of Buckley (on whom I have very extensive materials) waiting for a …
The Geology Of The Lancaster Quadrangle Of Dallas And Ellis Counties, Texas, Jerome J.C. Ingels
The Geology Of The Lancaster Quadrangle Of Dallas And Ellis Counties, Texas, Jerome J.C. Ingels
Field and Laboratory
Location.-The Lancaster Quadrangle is in southwestern Dallas County and northwestern Ellis County. It is bounded on the north by parallel 32 ° 37' 30"; and on the south by parallel 32 ° 30' 00"; on the west and east by meridians 96° 52' 30" and 96° 45' 00", respectively. Methods of Study.-The field work was done during the summer and fall months of 1956. A state highway map of Dallas and Ellis counties was used as the base map for this study. The geology was plotted on aerial photographs and later transferred to the base map with the aid of …
The Natural History Of Necturus: I. Habitats And Habits, Joseph P. Harris Jr.
The Natural History Of Necturus: I. Habitats And Habits, Joseph P. Harris Jr.
Field and Laboratory
The mudpuppies are entirely aquatic; in habits they are more fish than amphibian. Their legs are weak, and they are nearly helpless on land.
Golden-Cheeked Warblers In Dallas County, Texas, Edward C. Fritz
Golden-Cheeked Warblers In Dallas County, Texas, Edward C. Fritz
Field and Laboratory
No abstract provided.
Ammannia Teres Raf. (Lythraceae) In Coastal Texas, Fred B. Jones
Ammannia Teres Raf. (Lythraceae) In Coastal Texas, Fred B. Jones
Field and Laboratory
No abstract provided.
A Rapid Volumetric Analysis For Carbonate In Rocks, Eugene Herrin, H. Sterling Hicks, Herbert Robertson
A Rapid Volumetric Analysis For Carbonate In Rocks, Eugene Herrin, H. Sterling Hicks, Herbert Robertson
Field and Laboratory
Rapid, accurate analyses for the CO3 content of carbonate rocks may be made by allowing a known amount of the rock to react with a measured quantity of standard H2SO4 and then determining the amount of acid which remains by back-titration with standard NaOH. The technique is faster and more accurate than the leaching method and, more important, allows the analyst to determine directly the CO3 content. Very accurate analyses for CO3 in limestones may be made by potiometric titration methods, but quite satisfactory results are obtained using phenolphthalein as an indicator. As is the case with igneous rocks, the …
First Records Of Four East-European Linnaean Plants At Dallas, Texas, Ernest Couch
First Records Of Four East-European Linnaean Plants At Dallas, Texas, Ernest Couch
Field and Laboratory
No abstract provided.
The Red Fox, Vulpes Fulva, In Dallas County, Texas, William B. Stallcup
The Red Fox, Vulpes Fulva, In Dallas County, Texas, William B. Stallcup
Field and Laboratory
No abstract provided.
Men Of Science In Texas, 1820-1880, S. W. Geiser
Men Of Science In Texas, 1820-1880, S. W. Geiser
Field and Laboratory
Recently there came back into my hands a lent-and forgotten-dossier of 1929 correspondence with Swiss and German universities and libraries-a correspondence dealing with the Swiss naturalist, Jacob Boll, who spent the last years of his life in Texas. His life, with that of other naturalists, is sketched in my Naturalists of the Frontier (1937, 1948). Such a recovery reminds one of the passing of time, and a long-made promise to put into print an account of the men of science (sit venia verbo) of Early Texas. Most of them were men of other trades, professions, what-you-will, of good amateur standing; …
The Geology Of The Palmer Quadrangle, Ellis County, Texas, James Alfred Pitkin
The Geology Of The Palmer Quadrangle, Ellis County, Texas, James Alfred Pitkin
Field and Laboratory
Location of Palmer Quadrangle.-This quadrangle lies in northeastern Ellis County. It is bounded by the meridians 96° 37' 30" and 96° 45' 00", and by the parallels 32° 22' 30" and 32° 30' 00", and includes an area of some 61 square miles. U.S. Highway 75 crosses the quadrangle, and there is a complementary network of secondary roads. Palmer, Trumbull, and Boyce are the only towns within the area. General Stratigraphy.-Bedrock consists of the upper chalk member of the Austin chalk and two members of the Taylor marl, the Lower Taylor marl member and the Wolfe City sandstone member. All …
The Ants Of Dallas County, Texas, And Their Nesting Sites; With Particular Reference To Soil Texture As An Ecological Factor, Charles G. Hess
The Ants Of Dallas County, Texas, And Their Nesting Sites; With Particular Reference To Soil Texture As An Ecological Factor, Charles G. Hess
Field and Laboratory
On the ants of any particular area of Texas, virtually no papers have been published, which attempt to examine the relationships of the species to certain ecological factors. The main reasons for this, perhaps, have been the absorption of our myrmecologists in adequate identification and description of the American forms, and the difficulties involved therein. In the past few years, the foundations of our taxonomic entities have been strengthened, and such studies have come to be more appreciated. This paper deals with the ants of Dallas County, Texas, and their nesting sites, with special reference to soil as an ecological …
Gustavus Wilhelm Wuerdemann (1817-59), Early Naturalist Of The U.S. Coast Survey, S. W. Geiser
Gustavus Wilhelm Wuerdemann (1817-59), Early Naturalist Of The U.S. Coast Survey, S. W. Geiser
Field and Laboratory
The recent appearance of Wraight & Roberts' sequicentennial historical account of the U.S. Coast & Geodetic Survey calls to mind the splendid natural-history collections that G. W. Wurdemann, tidal-observer and meteorologist, made during the years 1844 to 1859, especially in Texas, Louisiana, and Florida. As no extended biographical notice of this naturalist has appeared in the nearly one-hundred years that have passed since his death, the present note may be of interest to students of the history of scientific exploration in the early South and Southwest.
Joseph Pitty Couthouy (1808-64) In Texas, S. W. Geiser
Joseph Pitty Couthouy (1808-64) In Texas, S. W. Geiser
Field and Laboratory
One of the most interesting and appealing members of the scientific staff of the Wilkes Exploring Expedition around the world (1838-42) was Joseph P. Couthouy. The biographers, however, have dealt badly with him. Neither Appleton's Cyclopaedia of American Biography, nor the curiously selective Dictionary of American Biography give a sketch of his life. Nor is there one in that omnium-gatherum, the Lippincott-Thomas biographical dictionary (which can hardly be called selective, judging from some inclusions). Fragmentary accounts of him are given in various notes on the work of the Wilkes expedition; and we have early been dependent on Bouve's (1880) and …
Geology Of The Ferris Quadrangle, Dallas And Ellis Counties, Texas, Donald F. Reaser
Geology Of The Ferris Quadrangle, Dallas And Ellis Counties, Texas, Donald F. Reaser
Field and Laboratory
The Ferris Quadrangle in southern Dallas and northern Ellis counties, Texas, is underlain by the Austin Chalk and Taylor Marl, both of Upper Cretaceous age. Two members of the Austin, the middle marl and the upper chalk, along with the lower blue-gray unit of the Taylor Marl, crop out within the area. The Austin-Taylor contact, within the area in Dallas County, is transitional and consists of chalk and marl sequences intermediate in lithology between the two formations. The contact in Ellis County is marked by a reddish-brown clay zone containing phosphate nodules, indicating an unconformity. Approximately one-half of the area …
Geology Of The Midlothian Quadrangle, Ellis County, Texa, Louis C. Read
Geology Of The Midlothian Quadrangle, Ellis County, Texa, Louis C. Read
Field and Laboratory
The Midlothian quadrangle in northwest Ellis County, Texas, is underlain by the Eagle Ford Shale and Austin Chalk, both of Upper Cretaceous age. The upper 75 to 100 feet of Eagle Ford shale crops out within the quadrangle. It is predominantly a dark gray clay containing flaggy detrital limestone beds. Separating the shale from the overlying chalk is a six-inch conglomerate bed containing black phosphate pebbles, phosphatized fish teeth and molluscan shells, glaueonite, quartz, gypsum, and calcareous foraminifera tests. The lower Austin Chalk consists of massive chalk beds interbedded with thin beds of marl or bentonitic shale. In the upper …
A Note On “Vinzent's Texanische Pflanzen, 1847”, S. W. Geiser
A Note On “Vinzent's Texanische Pflanzen, 1847”, S. W. Geiser
Field and Laboratory
The Botanische Zeitung, 5, 447-48, May, 1847, printed the following note by Otto Boeckeler of Varel a/Jahde, Grand-duchy of Oldenburg. As no further notice appeared in subsequent volumes of the journal, and as it poses a problem that has concerned students regarding the identity of the collector "Vinzent" in Texas, I translate the note freely. […] The foregoing notice, when it came to my attention ten years ago, piqued my interest in a Texan collector who has long been lost sight of.
A Further Note On Scaevola, C. V. Morton
Callana, Plant Collector In Early Texas: A Note And An Inquiry, S. W. Geiser
Callana, Plant Collector In Early Texas: A Note And An Inquiry, S. W. Geiser
Field and Laboratory
No abstract provided.
The Ringtail Cat, Bassaricus Astutus, In Dallas County, Texas, William B. Stallcup
The Ringtail Cat, Bassaricus Astutus, In Dallas County, Texas, William B. Stallcup
Field and Laboratory
No abstract provided.
Dianthera Americana L. Var. Subcoriacea (Fernald) Shinners, Comb. Nov., Lloyd H. Shinners
Dianthera Americana L. Var. Subcoriacea (Fernald) Shinners, Comb. Nov., Lloyd H. Shinners
Field and Laboratory
No abstract provided.
The Southern Methodist University Map-Library, Eleanor Maclay
The Southern Methodist University Map-Library, Eleanor Maclay
Field and Laboratory
In an especially equipped room in the Fondren Science Building on the campus of Southern Methodist University may be found the University's sheet map collection. There steel map cases hold a file of more than 93,000 maps and charts and 3,500 aerial photographs. In addition, atlases, gazetteers, and cartographic bibliographies are available for research and the large world globe offers more than 22,000 place names for reference. There are map tables suitable for assembling map series. The Map Library now ranks as one of the ten largest university map libraries in the United States and the largest in the Southwest. …