Digital Commons Network^™

The Fertilization-Reaction In Echinarachnius Parma. Viii. Fertilization In Dilute Sea-Water, E. E. Just

Faculty Reprints

No abstract provided.

The Fertilization-Reaction In Echinarachnius Parma. Viii. Fertilization In Dilute Sea-Water, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

The Fertilization-Reaction In Echinarachnius Parma. Vii. The Inhibitory Action Of Blood, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

The Fertilization-Reaction In Echinarachnius Parma. Vii. The Inhibitory Action Of Blood, E. E. Just

Faculty Reprints

No abstract provided.

Some Bees From British Guiana, T. D. A. Cockerell

Co

No abstract provided.

The Fertilization-Reaction In Echinarachnius Parma. Vi. The Necessity Of The Egg Cortex For Fertilization, E. E. Just

Faculty Reprints

No abstract provided.

The Fertilization-Reaction In Echinarachnius Parma. Vi. The Necessity Of The Egg Cortex For Fertilization, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

Some Field Instruments And Their Applications, G. W. Goldsmith

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

Physiology and ecology depend for their constructive development largely upon the applications of physico-chemical concepts to living organisms and their environment, to their life processes, reactions, and interrelations. A concept is valuable biologically in so far as it can be applied and used as a tool for better understanding of the phenomena related to life. Ecology, as the study of the relations between organisms and their environment and of the interrelations of organisms, depends primarily upon the findings of physiology (Clements, 1905). But to apply physicochemical concepts and hence make them of value to the physiologist or ecologist commonly requires …

Bulletin 104 - The Stickfast Flea, John G. C. Campbell

Bulletins 1 - 2999

The insect which forms the subject of this Bulletin has raised great consternation in certain parts of this State by the trouble which it has caused amongst Poultry.

Fleas in general are notorious on account of the discomfort which they cause to man and animals, but, in this country none has a more evil reputation than the Stickfast Flea.

Bulletin 105 - Pedigree Selection Of Seed At The Chapman And Merredin Experiment Farms, Geo L. Sutton

Bulletins 1 - 2999

A Paper read before the Royal Society of the Royal Society of Western Australia, 12th October,1921.

"Pedigree" or "Pure Line" selection is that system of selection under which the choice is made, not. solely because of the attractive appearance of the plant, but because of its ability to transmit its good qualities to the progeny. Such a system requires, and the method of selection ensures, that the qualities sought after shall be hereditary. For this purpose a record of ancestry is essential, hence the use of the term "pedigree."

Some Effects Of Cover Over Coniferous Seedbeds In Southern New England, James W. Toumey, Ernest J. Neethling

Yale School of the Environment Bulletin Series

The object of the study as at first conceived was to secure experimental data under the climatic conditions of southern Connecticut: 1. On the effect of shade as compared with full light on the time required for germination, and on germination values in representative conifers, and on survival and growth during the first season. 2. On the effect of mulch as compared with exposed soil on the time required for germination, and on germination values in representative conifers, and on survival and growth during the first season.

Studies On The Early Differentiation Of The Neurons Of The Spinal Cord And The Spinal Ganglia Of The Chick Embryo By The Pyridine And Silver Method, Daniel Ludwig

Biology Honors Papers

This 18 page handwritten thesis examines the differentiation of the neurons in the gray matter of the spinal cord and in the spinal ganglion as observed in the chick embryo of four, five and six days incubation.

Cocobolo, Samuel J. Record, George A. Garratt

Yale School of the Environment Bulletin Series

Cocobolo is a valuable timber of commerce that has been in use in this country, particularly for handles of cutlery, for more than fifty years. It is produced by certain species of Dalbergia indigenous to Central America and southwestern Mexico. The present commercial sources are Panama, Costa Rica, and Nicaragua.

Pericarp Studies In Maize. I. The Inheritance Of Pericarp Colors, E. G. Anderson, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

Introduction ... 466

Nomenclature ... 467

Pigments present in colored pericarp ... 467

Factor relations of pericarp colors ... 468

Factor relations of red pericarp, P ... 468

Factor relations of cherry pericarp ... 471

Discussion and Summary ... 474

Literature Cited ... 475

Initiation Of Development In The Egg Of Arbacia. Ii. Fertilization Of Eggs In Various Stages Of Artificially Induced Mitosis, E. E. Just

Faculty Reprints

No abstract provided.

Initiation Of Development In The Egg Of Arbacia. Iii. The Effect Of Arbacia Blood On The Fertilization-Reaction, E. E. Just

Faculty Reprints

No abstract provided.

Initiation Of Development In The Egg Of Arbacia. I. Effect Of Hypertonic Sea-Water In Producing Membrane Separation, Cleavage, And Top-Swimming Plutei, E. E. Just

Faculty Reprints

No abstract provided.

Initiation Of Development In The Egg Of Arbacia. Iii. The Effect Of Arbacia Blood On The Fertilization-Reaction, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

Initiation Of Development In The Egg Of Arbacia. I. Effect Of Hypertonic Sea-Water In Producing Membrane Separation, Cleavage, And Top-Swimming Plutei, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

Initiation Of Development In The Egg Of Arbacia. Ii. Fertilization Of Eggs In Various Stages Of Artificially Induced Mitosis, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

On Rearing Sexually Mature Ptaynereis Megalops From Eggs, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

A Study Of The Environmental Conditions Influencing The Development Of Stem Rust In The Absence Of An Alternate Host. I. The Viability Of The Urediniospores Of Puccinia Graminis Tritici Form Iii, George L. Peltier

Nebraska Agricultural Experiment Station: Historical Research Bulletins

No exact data are at hand regarding the influence of temperature and relative humidity on the viability of the urediniospores of stem rust under controlled conditions. 1. The influence of relative humidity on the viability of the urediniospores of Puccinia graminis tritici Form III is very pronounced and closely associated with temperature. 2. At high relative humidities, depending somewhat on the temperature, the percentage of germination is low and the period over which the spores are viable is very short. 3. The same relation exists at the low relative humidities except that it is not so pronounced and is more …

The Fertilization-Reaction In Echinarachnius Parma. V. The Existence In The Inseminated Egg Of A Period Of Special Susceptibility To Hypotonic Sea-Water, E. E. Just

Faculty Reprints

No abstract provided.

Studies Of Cell Division: I. The Effects Of Dilute Sea-Water On The Fertilized Egg Of Echinarachnius Parma During The Cleavage Cycle, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

The Fertilization-Reaction In Echinarachnius Parma. V. The Existence In The Inseminated Egg Of A Period Of Special Susceptibility To Hypotonic Sea-Water, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

Studies Of Immunity Against Hemorrhagic Septicemia, L. Van Es, H. M. Martin

Nebraska Agricultural Experiment Station: Historical Research Bulletins

As one of the phases of our inquiry an effort was made to acquire some general knowledge regarding the immunizing value (1) of sera prepared with the aid of Bacillus bipolaris septicus procured from cattle and swine or (2) of those alleged to be of service in the control or treatment of hemorrhagic septicemia in the species mentioned. The experiments reported in this publication were almost exclusively made with sera purchased from dealers in biologic products.

Studies Of Cell Division: I. The Effects Of Dilute Sea-Water On The Fertilized Egg Of Echinarachnius Parma During The Cleavage Cycle, E. E. Just

Faculty Reprints

No abstract provided.

The County Agent's Handbook, I. B. Johnson

SDSU Extension Circulars

In the daily work of the county agricultural agent, the agricultural extension worker, the farmer, or anyone interested in agriculture, questions arise, whose answers involve much detailed information. Workers have frequently realized the value of a ready, pocket-sized reference from which such information might be obtained. It is hoped that this handbook may fulfill such a requirement. The material enclosed is of special application to the agricultural conditions of South Dakota, yet so much of it is of general application that the handbook will be found useful by any agricultural worker. The loose leaf plan enables anyone to add whatever …

Variations In Cytology And Gross Morphology Of Taraxacum Ii. Senescence, Rejuvenescence, And Leaf Variation In Taraxacum, Paul B. Sears

Papers in Ecology

The variability of Taraxacum has frequently been recorded in botanical literature without receiving much elucidation. It is less often an object of investigation than of conjecture and discussion. A few botanists have studied the effect of environmental factors upon Taraxacum, but their results have not cleared away taxonomic difficulties. Systematic botanists have either looked upon the variations in this genus as fluctuations or slight mutations, and then proceeded to lump or split as judgment might dictate. That life history exerts a profound influence upon form seems generally to have escaped attention.

Anthocyan Pigments, Paul B. Sears

Papers in Ecology

Noack has found rhamnose-free flavonol diglucosides to be much more abundant in green leaves than has generally been supposed. In such leaves as he studied he was able to establish the existence of flavonol-anthocyan in couples of similar glucosidal nature, but secured no evidence of aromatic nucleus composition in such cases. He suggests that these couples function as a reduction mechanism during photosynthesis.