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Articles 249301 - 249330 of 255951

Full-Text Articles in Life Sciences

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.


Kentucky Warbler (Vol. 15, No. 2), Kentucky Library Research Collections Apr 1939

Kentucky Warbler (Vol. 15, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


North And South Dakota Horticulture, April 1939, North And South Dakota State Horticultural Societies Apr 1939

North And South Dakota Horticulture, April 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 4

The Vesper Sparrow, O.A. Stevens
Newslants, H.A. Graves
Nature Department, H.L. Hopkins
President's Corner, H.E. Beebe
Fruit and Vegetable Notes, F.X. Wallner
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
Book Review, Mrs. F. Briley
Tomato Growing, R.H. Seydel
Horticultural Travelogue, A.L. Truax
Snow Bound, W.E.H. Porter
News Notes, C.B. Waldron


The Effects Of Stinking Smut (Bunt) And Seed Treatment Upon The Yield Of Winter Wheat, T. A. Kiesselbach, W. E. Lyness Apr 1939

The Effects Of Stinking Smut (Bunt) And Seed Treatment Upon The Yield Of Winter Wheat, T. A. Kiesselbach, W. E. Lyness

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The depreciating effects of bunt or stinking smut (Tilletia levis Kuhn and tritici [Bjerk.] Wint.) upon the yield and quality of winter wheat in Nebraska and many other states are well known. The practical control of this disease through seed treatment has also been established and is being extensively practiced by growers. At the time these experiments were initiated in 1923, formaldehyde was the most commonly used disinfectant, while copper carbonate was just gaining recognition following its introduction by Darnell-Smith in 1915. It has been the chief purpose of the investigations herein reported to study the relative merits of …


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.


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.


The Rhamnales Of Wisconsin: A Taxonomic Study, Richard W. Pohl Apr 1939

The Rhamnales Of Wisconsin: A Taxonomic Study, Richard W. Pohl

Bachelors’ Theses

The extensive taxonomic literature on the North American Vites was reviewed by L.H. Bailey (3) in 1934. Among the earlier writers, Major John Le Conte published "An Enumeration of the Vines of North America" (32) in the Proceedings of the Academy of Natural Sciences of Philadelphia for 1852-1853. Dr. George Engelmann of St. Louis published a short review of the North American grapes in the American Naturalist for August,1868. He mentioned ten species, giving formal descriptions for none, and commented upon the work of Rafinesque, who had attempted to describe the North American species of Vitis about fifty years previously, …


Effects Of Frequent Clipping On The Underground Food Reserves Of Certain Prairie Grasses, F. S. Bukey, J. E. Weaver Apr 1939

Effects Of Frequent Clipping On The Underground Food Reserves Of Certain Prairie Grasses, F. S. Bukey, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

A series of experiments in which true-prairie grasses were clipped at frequent intervals afforded excellent materials for a study of the effects of such treatment upon the food reserves. Two species of Andropogon, at present the most important dominants of true prairie, were employed. A series of quadrats on a north-facing slope in the Blemont prairie in Lincoln, Nebraska, in which little bluestem Andropogon scoparius, grew in about 70 of big bluestem, A. furcatus, were obtained about a mile distant from virgin lowland prairie near the flood plain of salt creek.


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.


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.


Fifty Years Of Achievement In Agricultural Investigation, R. T. Prescott Mar 1939

Fifty Years Of Achievement In Agricultural Investigation, R. T. Prescott

Nebraska Agricultural Experiment Station: Historical Circulars

In Nebraska, a hustling frontier state in 1887, the legislature hesitated not at all in taking advantage of the provisions of the Hatch Act, and now that fifty years have elapsed since the Station was founded, seventy-five years since the Land Grant College Act was passed and the U. S. Department of Agriculture established, and almost twenty-five years since the Agricultural Extension Service was added, it seems worth while to present a general summary of achievement within the state. The main object will be to show some of the important things that have been learned through the investigations of the …


North And South Dakota Horticulture, March 1939, North And South Dakota State Horticultural Societies Mar 1939

North And South Dakota Horticulture, March 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 3

The Pine Siskin, O.A. Stevens
Newslants, H.A. Graves
Nature Department, H.L. Hopkins
President's Corner, H.E. Beebe
Fruit and Vegetable Notes, F.X. Wallner
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
Book Review, Mrs. F. Briley
Lilies, F.L. Skinner
Books and Catalogs, W.E.H. Porter
S.D. Premium List


The Utilization Of Food Elements By Growing Chicks. Vii. A Comparison Of Corn And Kalo In A Ration For Growing Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl Mar 1939

The Utilization Of Food Elements By Growing Chicks. Vii. A Comparison Of Corn And Kalo In A Ration For Growing Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effect of replacing 31 per cent of ground corn in a ration by 31 per cent of ground kalo was studied in a growth and body-analysis experiment with two lots of newly hatched chicks. 2. The amounts of feed consumed by all chicks of both lots were kept identical by hand-feeding equal amounts of the pelleted rations daily. 3. There were no significant differences in the growth rate or composition of the chicks at the end of a six weeks' feeding trial.


Effect Of Frequent Clipping On Plant Production In Prairie And Pastur, J. E. Weaver, V. H. Hougen Mar 1939

Effect Of Frequent Clipping On Plant Production In Prairie And Pastur, J. E. Weaver, V. H. Hougen

Department of Agronomy and Horticulture: Faculty Publications

The degeneration of native bluestem prairies of eastern Nebraska occurs slowly under moderate grazing or slight overgrazing but within two to five years where overgrazing is pronounced. Although the changes in the plant populations are continuous until the soil is finally almost bare, for convenience of study they have been grouped into several more or less distinct stages (Weaver and Harmon, 1935). An intermediate stage in deterioration is indicated by a great increase in the abundance of bluegrass (Poa pratensis), blue grama grass (Bouteloua gracilis), or buffalo grass (Buchloe dactyloides), the latter especially on …


Major Changes In Grassland As A Result Of Continued Drought, J. E. Weaver, F. W. Albertson Mar 1939

Major Changes In Grassland As A Result Of Continued Drought, J. E. Weaver, F. W. Albertson

Department of Agronomy and Horticulture: Faculty Publications

A comprehensive research on 135 large tracts of prairie was completed in 1933 after five years of study. These tracts were distributed over an area of 60,000 square miles, including the eastern one-third of Nebraska, the western one-third of Iowa, and adjacent areas in the four neighboring states (2). This investigation furnished the background for an understanding of the profound changes which have occurred during the several years of the great drought, which first became pronounced in 1934. The response of prairie to the drought of that year has been discussed (3). Likewise, a detailed account of the destruction caused …


A Study Of The Structure Of Hair As A Means Of Mammal Identification, Earl R. Oyer Feb 1939

A Study Of The Structure Of Hair As A Means Of Mammal Identification, Earl R. Oyer

Master's Theses or Doctor of Nursing Practice

The hair of small and medium sized mammals is often found in the stomachs, feces and pellets of predators , for example in the stomachs and feces of coyotes and in the pellets regurgitated by hawks and owls. These pellets produced by hawks and owls and the feces of mammalian predators are the undigested residue of what these animals have eaten. If the hair from these sources can be identified, then much desirable information concerning the food of predators can be obtained. The purpose of this study has been to determine whether or not such identification is possible.


The Utilization Of Food Elements By Growing Chicks. Vi. The Influence Of The Protein Level Of The Ration On The Growth Of Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl Feb 1939

The Utilization Of Food Elements By Growing Chicks. Vi. The Influence Of The Protein Level Of The Ration On The Growth Of Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. Two rations containing 16 and 22 per cent of protein respectively were fed to newly hatched chicks in two series of feeding trials. In one series the lower protein level was secured by diluting the higher with 30 parts of starch so that the amount but not the quality of the protein was changed. In the other series the amount and quality of the protein both varied since the two rations were mixed by using different proportions of the base and concentrate to yield the 16 and 22 per cent levels in the finished rations. 2. Comparisons were made …


North And South Dakota Horticulture, February 1939, North And South Dakota State Horticultural Societies Feb 1939

North And South Dakota Horticulture, February 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 2

The Redpool, O.A. Stevens
Newslants, H.A. Graves
Nature Department, H.L. Hopkins
South Dakota Trees, Gov. H.J. Bushfield
President's Corner, H.E. Beebe
Fruit and Vegetable Notes, F.X. Wallner
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
Book Review, W.A. Simmons
Book Review, Mrs. F. Briley
The Willow, C.B. Waldron
Fine Weather Persists, W.E.H. Porter
Beekeeper's Notes, J.A. Munro


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.


A Laboratory Manual Of Vertebrate Embryology, F.B. Adamstone, Waldo Shumway Jan 1939

A Laboratory Manual Of Vertebrate Embryology, F.B. Adamstone, Waldo Shumway

Jane Claire Dirks-Edmunds Documents

This laboratory manual for vertebrate embryology includes notes and colorful, hand-drawn illustrations of frogs, chicks, and pigs. The illustrations and notes were made by Dr. Jane Claire Dirks-Edmunds when she was a graduate student in Zoology at the University of Illinois from 1937-1941.

Dr. Dirks-Edmunds graduated from Linfield College in 1937; she returned to teach in the Biology department at Linfield from 1941-1974.


The Life History Of The Sand Wasp, Bembix Occidentalis Beutenmuelleri Fox, And Its Parasites, George E. Bohart, John W. Macswain Jan 1939

The Life History Of The Sand Wasp, Bembix Occidentalis Beutenmuelleri Fox, And Its Parasites, George E. Bohart, John W. Macswain

All PIRU Publications

No abstract provided.


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?


Botulism And Picrotoxin, Arnold H. Maloney Jan 1939

Botulism And Picrotoxin, Arnold H. Maloney

College of Medicine Faculty Publications

No abstract provided.


Annual Report: 1939 Jan 1939

Annual Report: 1939

Cherry County (Nebraska) Extension: Historical Documents

The educational program of agricultural extension has been sponsored by the Cherry County Extension Service. 359 families subscribed $1630.40 for the support of the work in 1939. The commissioners provided office space valued at $180.00. Other income provided $288.58 making a total operating fund of $2,103.38.

Expenditures for operating costs during the year were $180.00 for office space and $1671.29 for carrying on the program.

Mr. Jake Stasch of Nenzel, Mr. A. J. Galloway of Kilgore, and Mr. O. J. Dau of Cody were appointed members of the finance committee. They directed the canvass for subscriptions with the help of …


Bulletin No. 284 - Lygus Bugs In Relation To Alfalfa Seed Production, C. J. Sorenson Jan 1939

Bulletin No. 284 - Lygus Bugs In Relation To Alfalfa Seed Production, C. J. Sorenson

UAES Bulletins

This investigation, which continued during the two succeeding years, had four primary purposes: (1) to determine the distribution of these plant bugs and the intensity of their infestation in the alfalfa-seed districts of the state; (2) to ascertain whether these bugs constitute an important factor, either causing or contributing to, the excessive flower-drop annually occurring in alfalfa-seed fields, or if they are otherwise responsible for decreased yields of alfalfa seed; (3) to study the general biology of these insects with particular reference to their life histories in alfalfa as the host plant; and (4) to investigate possible practical methods for …


Bulletin No. 285 - A Study Of Farm Organization By Types Of Farms In Uintah Basin, Utah, George T. Blanch Jan 1939

Bulletin No. 285 - A Study Of Farm Organization By Types Of Farms In Uintah Basin, Utah, George T. Blanch

UAES Bulletins

Project 179 of the Utah Agricultural Experiment Station - "A Study of the Agricultural Resources of Utah and their Utilization" - was set up in April 1936 as a state-wide project. The object of this project was to measure by areas the basic agricultural resources of the state and to translate-the information collected into a program of more efficient use. The more specific objectives were: (1) classification of agricultural lands of Utah according to present and potential productivity and use; (2) determination of the net productive area of agricultural lands and water supply now available, or which may be developed; …


Bulletin No. 286 - Some Trends In Utah's Agriculture, Walter U. Fuhriman Jan 1939

Bulletin No. 286 - Some Trends In Utah's Agriculture, Walter U. Fuhriman

UAES Bulletins

During the last two decades agriculture has been subjected to many strains and stresses- social, economic, physical, and biological. Infestations of noxious weeds and insect pests have in some instances necessitated changes in crops grown and in farming practices. Changes in precipitation have induced alternate expansion and contraction of cultivated acreage in certain areas. Improved machinery has reduced the demand for farm labor, caused shifts in crops grown and in farm population. Changes in dietary habits have increased the demand for some farm commodities and decreased the demand for others, while wide fluctuations in farm prices have wrought rapid changes …


Kentucky Warbler (Vol. 15, No. 1), Kentucky Library Research Collections Jan 1939

Kentucky Warbler (Vol. 15, No. 1), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Ua3/2/1 Landscaping, Wku President's Office - Garrett Jan 1939

Ua3/2/1 Landscaping, Wku President's Office - Garrett

WKU Administration Documents

Virginia Garrett correspondence with Hillenmeyer Nurseries regarding WKU landscaping. Original housed in Paul Garrett's Correspondence / Subject File Box 7, Folder 41.


Anatomy And Histology Of The Digestive Tract Of A Deep-Sea Fish Coelorhynchus Carminatus, Elly M. Jacobsen Jan 1939

Anatomy And Histology Of The Digestive Tract Of A Deep-Sea Fish Coelorhynchus Carminatus, Elly M. Jacobsen

University Studies (University of Nebraska) (1888–1984)

This paper deals with the anatomy and histology of the digestive tube of one of the grenadiers or rat-tails, Coelorhynchus carminatus (Goode), as classified by Jordan & Evermann (1896).1 Many studies on the structure of the digestive tracts of fishes have been made in the past, and pioneer work in the teleost group was done by Valatour in 1861, Pillet in 1894 on the Pleuronectidae, and Gulland in 1898 on the salmon. More recent studies have been made by Greene (1912) on the king salmon, Blake 2 (1930) on the sea bass, and Rogick (1931) on the minnow.

The species …