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Articles 1381 - 1384 of 1384

Full-Text Articles in Organisms

The Isolation Of Some Nonsymbiotic Nitrogen Fixing Organisms Occurring In Some Utah Soils, Richard B. Johnson May 1941

The Isolation Of Some Nonsymbiotic Nitrogen Fixing Organisms Occurring In Some Utah Soils, Richard B. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plants require ten elements in appreciable quantity and several others in smaller amount for their continued and normal growth. Three of these necessary elements, nitrogen, phosphorus, and potassium are most important because they occur in the soil in quantities which are usually small in proportion to that needed by the plants. Of these three, nitrogen is in most cases the limiting factor because of the ease with which it may be leached from the soil and comparatively large amount assimilated by plants. These factors coupled with the inhibiting high cost of artificially replacing it in the form of commercial fertilizers, …

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Kidney Of The Frog, Felix Taubman May 1938

Kidney Of The Frog, Felix Taubman

Bachelors’ Theses

The frog has been used exclusively in both high school and college as the main source of experimental biological and zoological studies. Because it is so easily obtained and so finely adapted to our purposes, we chose it as the specimen upon which to do our thesis work. Much has been done experimentally on the kidneys with the frog. The purpose of this thesis is to present a general view of the external and microscopic anatomy of the frog kidney and with this as a groundwork to present the problems of secretion; whether secretion is carried on by the renal …

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The Effect Of Different Methods Of Handling Chicken Manure On The Viability Of Weed Seed, Golden L. Stoker May 1938

The Effect Of Different Methods Of Handling Chicken Manure On The Viability Of Weed Seed, Golden L. Stoker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It is well known that weeds spread and are perpetuated by means of seed and vegetative reproduction. The seeds in turn are spread by various agencies such as wind, water, animals and man. These agencies are aided by especially adapted seed mechanisms for dissemination.

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Gorgas Memorial Laboratory, Kentucky Library Research Collections Jan 1928

Gorgas Memorial Laboratory, Kentucky Library Research Collections

Research Collections

Gorgas Memorial Laboratory : hearings before the Committee on Foreign Affairs, House of Representatives, seventieth Congress first session on H.R. 8128 to authorize a permanent annual appropriation for the maintenance and operation of the Gorgas Memorial Laboratory, January 20, 1928. Arguments for a bill to authorize a permanent annual appropriation for the maintenance and operation of the Gorgas memorial laboratory; with a speech of Hon. Maurice H. Thatcher, of Kentucky, in the House of Representatives.

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