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Articles 251101 - 251130 of 256032

Full-Text Articles in Life Sciences

Description Of The Corn Plant, Ralph E. Johnston, George H. Valentine Jan 1923

Description Of The Corn Plant, Ralph E. Johnston, George H. Valentine

SDSU Extension Circulars

Before discussing the methods of the culture of corn we must know something of the plant itself. We must, in fact, be intimately acquainted with the plant and all its parts, their structure and something of the functions they perform. The method of growth must also be known in order to develop the desirable characters and to gradually eliminate the more undesirable characters. This circular is divided into dive divisions. Each division takes up a part of the corn plant and describes it in detail.


Fall And Winter Care Of Strawberries, A. L. Ford Jan 1923

Fall And Winter Care Of Strawberries, A. L. Ford

SDSU Extension Circulars

This is the last of the regular monthly lessons. Since there are two things left to be done with your strawberry beds this fall, we feel that both should be taken up in this last lesson. These two things are fall care of everbearing varieties and winter protection by mulches.


The Fertilization-Reaction In Echinarachnius Parma. Vi. The Necessity Of The Egg Cortex For Fertilization, E. E. Just Jan 1923

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 Jan 1923

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 …


Experimental Pollination; An Outline Of The Ecology Of Flowers And Insects 5. Pollinators And Flowers Visited & 6. Flowers And Their Visitors, Frederic E. Clements, Frances L. Long Jan 1923

Experimental Pollination; An Outline Of The Ecology Of Flowers And Insects 5. Pollinators And Flowers Visited & 6. Flowers And Their Visitors, Frederic E. Clements, Frances L. Long

Ca

No abstract provided.


Bulletin 104 - The Stickfast Flea, John G. C. Campbell Jan 1923

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 115 - The Value Of Windmills For Pumping Water In Western Australia, A. H. Scott Jan 1923

Bulletin 115 - The Value Of Windmills For Pumping Water In Western Australia, A. H. Scott

Bulletins 1 - 2999

It is surprising to note the dearth of up-to-date reliable information dealing with actual results of modern windmills, under working conditions, though literature on thousands of other subjects less important can usually be obtained.

In this bulletin there is presented a complete and accurate record of the amount of water pumped daily by a windmill, under actual working conditions, for a period of 14 months.


Bulletin 111 - Standard Wheat Varieties For The W. A. Wheat Belt, Geo L. Sutton, F. Vanzetti Jan 1923

Bulletin 111 - Standard Wheat Varieties For The W. A. Wheat Belt, Geo L. Sutton, F. Vanzetti

Bulletins 1 - 2999

Graded selected Pedigree seed is produced at the Chapman and Merredin Experiment Farms.


Bulletin 106 - The Red-Legged Velvet Earth Mite, L. J. Newman Jan 1923

Bulletin 106 - The Red-Legged Velvet Earth Mite, L. J. Newman

Bulletins 1 - 2999

This pest is sometimes called in error the "Red Spider" or the 'Earth Flea."

It is neither a spider nor a flea, being a species of mite.

It belongs to the family of mites known as the Eupodidae and to the Genus Notophallus. Many of the members of this family are predaceous, that is, they live upon other insects or animals, but the species we are dealing with appears to be wholly a plant feeder. A popular idea is that the mite lives and breeds in the earth. The rapidity with which newly planted vegetables become infested gives good excuse …


Bulletin 105 - Pedigree Selection Of Seed At The Chapman And Merredin Experiment Farms, Geo L. Sutton Jan 1923

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."


Ec23-122 Sweet Clover In Nebraska, P.H. Stewart, D.L. Gross Jan 1923

Ec23-122 Sweet Clover In Nebraska, P.H. Stewart, D.L. Gross

University of Nebraska-Lincoln Extension: Historical Materials

Sweet clover is adapted to practically all parts of Nebraska. It will grow under a wide range of soil and climatic conditions and is found growing wild in almost all sections of the state. It grows luxuriantly in eastern Nebraska and also does well in the western part of the state. Sweet clover will grow in regions of less rainfall than will red clover and, under certain conditions, it will do well where alfalfa is not easily grown.

This 1923 circular is largely based on questionnaire replies received from more than 200 farmers growing sweet clover in all parts of …


Ec23-120 Wheat In Nebraska, W.W. Burr, P.H. Stewart Jan 1923

Ec23-120 Wheat In Nebraska, W.W. Burr, P.H. Stewart

University of Nebraska-Lincoln Extension: Historical Materials

Wheat is one of the most important crops of the world. In total world tonnage it ranks third, being surpassed only by corn and potatoes. In th United States the tonnage is second only to corn, but wheat is far more important than corn as a human food.

Wheat is more important as a human food than any other rain crop. It is in itself almost a balanced food, and from earliest times has played an important part in the development of civilization. With the development of modern machinery wheat can now be produced without almost no hand work. On …


State Wide Activities Of The College Of Agriculture, Nebraska Agricultural Experiment Station Jan 1923

State Wide Activities Of The College Of Agriculture, Nebraska Agricultural Experiment Station

Nebraska Agricultural Experiment Station: Historical Circulars

The College of Agriculture carries the message of better farming to every corner of the State.


"Hogging Down Crops" : Cost Of Producing Crops And Pork, Albert Franklin Kidder Jan 1923

"Hogging Down Crops" : Cost Of Producing Crops And Pork, Albert Franklin Kidder

LSU Agricultural Experiment Station Reports

No abstract provided.


Reglamento General Para La Pesca De La República De Cuba, República De Cuba. Secretaría De Agricultura, Comercio Y Trabajo Jan 1923

Reglamento General Para La Pesca De La República De Cuba, República De Cuba. Secretaría De Agricultura, Comercio Y Trabajo

Mario Diaz Cruz Pamphlets

Publicado en "Gaceta Oficial" el 28 de Mayo de 1923


Some Effects Of Cover Over Coniferous Seedbeds In Southern New England, James W. Toumey, Ernest J. Neethling Jan 1923

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.


Harvesting, Storing And Marketing The Corn Crop, Ralph E. Johnston, George H. Valentine Jan 1923

Harvesting, Storing And Marketing The Corn Crop, Ralph E. Johnston, George H. Valentine

SDSU Extension Circulars

In this circular, created by the Agricultural Extension Service at South Dakota State College, the information provided focuses on harvesting the corn crop through the guidance of the Agriculture Department.


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 Jan 1923

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 Jan 1923

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 Jan 1923

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


Some Problems In Placement Of Graduates From Departments Of Vocational Agriculture, John T. Wheeler Jan 1923

Some Problems In Placement Of Graduates From Departments Of Vocational Agriculture, John T. Wheeler

Documents

Article on issues with vocational agriculture teachers.


Initiation Of Development In The Egg Of Arbacia. Ii. Fertilization Of Eggs In Various Stages Of Artificially Induced Mitosis, E. E. Just Dec 1922

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 Dec 1922

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.


History Of The Potato, George H. Valentine Dec 1922

History Of The Potato, George H. Valentine

SDSU Extension Circulars

This circular, created by the Agricultural Extension Service at South Dakota State College, addresses the history of the potato through the guidance of the Agronomy department during the year of 1922


School Lunch Sandwiches, Extension Service, South Dakota State College Dec 1922

School Lunch Sandwiches, Extension Service, South Dakota State College

SDSU Extension Circulars

The cold lunch at its beset is not the most desirable food for taking of the food requirements of the child, and when it is to be repeated every day of the school year is very apt to become tiresome and monotonous. The feeling that anything will do for the lunch box is altogether too prevalent. The lack of time is the most common excuse for the poorly prepared lunch box. It does not take any more time to put up wholesome lunches in an attractive way, but it does take thought and an appreciation of what the boy or …


Record Book For Milk Testing Club Members, H. M. Jones Dec 1922

Record Book For Milk Testing Club Members, H. M. Jones

SDSU Extension Circulars

This book is for your open personal use. Separate blanks will be provided for making your reports to the County Agent and the State Club Leader. This is simply for your convenience in summarizing. Weigh the milk of each cow to be tested just as often as possible. This should be done for at least two days a month. More frequent weighings would be better. The best and most accurate method is to weigh every day. Record the amount of milk for each cow opposite the day of the month. Suppose that you weigh the milk on the 9 and …


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 Dec 1922

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 Dec 1922

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 Dec 1922

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 Dec 1922

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.