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A Comparative Study Of The Structure And Origin Of The Yolk Nucleus, John P. Munson

Biology Faculty Scholarship

The question as to the comparative structure and origin of the yolk nucleus involves several other problems:

1. Is the yolk nucleus a normal element of the egg cytoplasm, or is it associated with pathological states of the egg, or is it an artefact due to reagents?

2. Is there a necessary connection between one form and another such that one can be derived from the other?

3. Is it an amorphous chemical substance or does it possess anything suggesting permanence of structure?

4. Does it arise de novo or is it a modification of something similar existing in the …

Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For The Year Ending June 30, 1912, South Dakota State College Of Agriculture And Mechanic Arts

Agricultural Experiment Station and Research Farm Annual Reports

No abstract provided.

Spraying As An Essential Part Of Profitable Apple Orcharding, R. A. Emerson, R. F. Howard, V. V. Westgate

University of Nebraska Historical Extension: Bulletin

It was therefore planned from the start not merely to demonstrate the possibility of controlling apple insects and diseases but also to determine whether they could be controlled profitably. To accomplish this it was necessary to know: exactly what it cost to spray, what sprayed fruit yielded, and what it was worth in comparison with unsprayed fruit from the same orchards. In every spraying demonstration the time spent in mixing and applying the materials and the quantity of material used were recorded. The cost of labor of men and teams per hour was taken at the orchard owners' estimates and …

The Entomologist: An Illustrated Journal Of General Entomology No. 574, Kenneth J. Morton, Rupert Stenton, T. Miyake, C. G. Nurse, W. J. Lucas, Richard South, L. W. Newman, T. D. A. Cockerell, W. J. Lucas, W. L. Distant, A. E. Wileman

Co

No abstract provided.

The Present Methods Of Teaching Entomology, J. H. Comstock

Department of Entomology: Faculty Publications

The present methods of teaching entomology followed in the United States have been developed almost entirely by men now teaching this subject. A second generation of teachers has begun its work; but the first is still on the stage. We h3i¥e progressed far enough, however, to make it worth while for the teachers to compare methods, in order that each may profit by the experience of the others. In a conference of this kind the contribution of each to the discussion will be, naturally, at first, merely a statement of the methods evolved in our several widely separated institutions. Then …

Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For The Year Ending June 30, 1911, South Dakota State College Of Agriculture And Mechanic Arts

Agricultural Experiment Station and Research Farm Annual Reports

No abstract provided.

Present Methods Of Teaching Entomology At The University Of Nebraska, Lawrence Bruner

Department of Entomology: Faculty Publications

'When our Secretary sent out his preliminary notification of this meeting and asked me to take part in a discussion of "present methods of teaching Entomology," the matter at first seemed of little importance so far, at least, as the speaker was concerned. However, after giving the subject some thought I have decided that it might be well at least to take the time and trouble to attempt to explain briefly a few of the methods by which the student in Nebraska is enabled to absorb some entomological information. In order to do this with an unbiased feeling it might …

New Elementary Agriculture, Charles E. Bessey, Lawrence Bruner, Goodwin D. Swezey

School of Biological Sciences: Faculty Publications

This is an agricultural nation. The products of the soil are the basis of her industries and her prosperity. The children of our great Commonwealths should be familiar with our crops, our grains and grasses, our flowers and fruits, our trees and shrubs and weeds, our domestic animals and birds and insects. Our children should have a practical knowledge of the management of a farm, of the composition of the soil, and of the adaptability of the farm and its soil for the cultivation of certain plants and the counter effect of such plant growth upon the soil. They should …

Bulletin No. 111 - The Reclamation Of Seeped And Alkali Lands, C. F. Brown, R. A. Hart

UAES Bulletins

In the year 1905, Drainage Investigations were begun in the State of Utah by the Office of Experiment Stations of the United States Department of Agriculture, in co-operation with the Utah Experiment Station. Appropriations have been made by the Utah State Legislature for irrigation and drainage investigations on condition that the United 8tates Department of Agriculture contribute an equal amount, and that the work be conducted jointly by the Federal department and the experiment station of the Agricultural College of Utah.

Bulletin No. 113 - The Influence Of The Combined Harvester On The Value Of The Wheat, Robert Stewart, C. T. Hirst

UAES Bulletins

The extension of the dry-farming area in Utah and the bringing of many thousands of acres of virgin land under wheat cultivation, in large farms, has, in recent years, caused much improvement in the use of farm machinery. One great improvement has been the adoption of the Combined Harvester, which cuts, threshes and sacks the grain in one operation in the field at a minimum of cost. This has been an important factor in the success of the dry-farming movement.

Bulletin No. 112 - A Report Of Seven Years' Investigation Of Dry Farming Methods, Lewis A. Merrill

UAES Bulletins

The permanent settlement of Utah was made possible because of the introduction of irrigation methods but the growing of crops without irrigation was successfully practiced soon after the settlement of the territory. From the existing records and from the words of many of the veterans still living it is evident that many attempts were made to grow wheat in the early 50's without irrigation. Most of these attempts failed, because they were made on irrigated lands. In 1865, however, an experiment on a much more extended scale was made.

Bulletin No. 110 - The Alfalfa Leaf-Weevil, E. G. Titus

UAES Bulletins

The alfalfa leaf-weevil (Phytonomus murinus Fab.) which has during the last three years been doing considerable damage in the central part of this State, is a European insect which by some means unknown has been introduced in to Utah. The species appears to be not uncommon throughout Europe and parts of Asia and Africa. It belongs to the large order of hard-shelled insects called beetles (Coleoptera) and in a group generally called snout-beetles (Family Curculionidae). To this same group belong many of our most serious pests, such as the plum curculio, cotton boll-weevil and strawberry weevil.

It occurs over all …

Bulletin No. 109 - The Nitrogen And Humus Problem In Dry-Land Farming, Robert Stewart

UAES Bulletins

The effect of cultivation and the growth of crops upon the nitrogen and humus content of soils has been studied by various investigators, both in America and Europe. In general, the results of the various investigations indicate that cropping and cultivation are very destructive of the organic. matter and the nitrogen of the surface soil.

The Prairie Flora Of Southwestern Minnesota, L. R. Moyer

Journal of the Minnesota Academy of Science

No abstract provided.

The Evening Grosbeak In Minnesota, Thomas S. Roberts

Journal of the Minnesota Academy of Science

No abstract provided.

The Bee Fauna Of Calgary, Alberta, T. D. A. Cockerell

Co

No abstract provided.

Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Year Ended June 30, 1910, South Dakota State College Of Agriculture And Mechanic Arts

Agricultural Experiment Station and Research Farm Annual Reports

No abstract provided.

Fearsome Creatures Of The Lumberwoods: With A Few Desert And Mountain Beasts, William T. Cox, Coert Du Bois

Nebraskiana Publications: Resources and Materials on the 37th State

Every lumber region has its lore. Thrilling tales of adventure are told in camp wherever the logger has entered the wilderness. The lumber jack is an imaginative being, and a story loses none of its interest as it is carried and repeated from one camp to another. Stories which I know to have originated on the Penobscot and the Kennebec are told, somewhat strengthened and improved, in the redwood camps of Humboldt Bay. Yarns originating among the river drivers of the Ottawa, the St. Croix, and the upper Mississippi are respun to groups of listening loggers on Vancouver Island. But …

Organization And Polarity Of Protoplasm, John P. Munson

All Faculty Scholarship for the College of the Sciences

In higher forms of life, we usually concede the presence of an organ specialized for the performance of a function. In these higher forms coordination of organs, which entails a regular sequence in their functions, is readily made out; and it seems a mere platitude to say, of these, that organization determines the functions of the organism. To what extent can functions exist in the absence of organization; does the one precede the other; or have function and organization developed simultaneously, out of matter devoid of both structure and function? In my studies on the cell, I have kept these …

The Inheritance Of Sizes And Shapes In Plants, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

Some years ago Lock reported a cross of a tall race of maize with a shorter race which produced an intermediate height in F₁ and exhibited no segregation in F₂ when crossed back with one of the parents. Castle's results with rabbits are very similar to those of Lock with maize. Castle summarizes his results in part as follows:

A cross between rabbits differing in ear-length produces offspring with ears of intermediate length, varying about the mean of the parental ear-lengths. . . . A study of the offspring of the primary cross-breds shows the blend of the …

Bulletin No 32 - Noxious Weeds And Poison Plants, Department Of Agriculture, Western Australia

Bulletins 1 - 2999

Many settlers, new to this State, find some difficulty in distinguishing those vegetable pests which are classed as noxious weeds, the eradication of which is made compulsory under the Noxious Weeds Act of 1904.

In order to facilitate the ready recognition of the plants which are the least familiar, the Department of Agriculture has prepared this Bulletin, giving illustrations of the several varieties which have been gazetted as noxious. these are: - Stinkwort, Bathurst Burr, Noogoorn Burr, Nut Bramble, Spanish Radish, Prickly Pear, Apple of Sodom, sweet Briar, Wild Bramble, Star Thistle (purple), Double Gee and Water hyacinth.

Bulletin No. 106 - A Study Of The Production And Movement Of Nitric Nitrogen In An Irrigated Soil, Robert Stewart, J. E. Greaves

UAES Bulletins

The problem of maintaining the nitrogen content in our agricultural soils is one of vital importance to the development of a permanent system of agriculture. Any investigation, therefore, which tends to throw any light on the conditions which are necessary for maintaining the maximum supply of nitrogen in our soils needs no apology for its institution.

Bulletin No. 107 - Improvement Of Utah Horses, John T. Caine Iii, H. J. Frederick

UAES Bulletins

Horse breeding in Utah, with some exceptions, has been carried on in a hap-hazard manner, and unsound horses of doubtful breeding have been purchased at high prices and have proven of little value. Where good blood has been introduced the temporary improvement has been marked, but as this work has not been followed up with care, results have not been lasting.

In spite of bad breeding, however, the standard of Utah horses has been advancing so that in western markets they command high pries. The climate, soil, feed and general conditions throughout the state make it an ideal place for …

Bulletin No. 105 - Factors Influencing Evaporation And Transpiration, John A. Widtsoe

UAES Bulletins

The irrigation investigations conducted by the Utah Experiment Station, some of the results of which form this *report, were undertaken for the purpose of adding to our knowledge of the natural laws upon which the art of irrigation may be safely built. The work has had for its dirrect object the study of the mutual relations of plants, soils and water, as these relations may indicate the most economic use of water for plant production. In pursuit of the investigations it became necessary not only to follow the movement of water in soils under irrigation conditions, but to determine also …

Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Year Ended June 30, 1909, South Dakota State College Of Agriculture And Mechanic Arts

Agricultural Experiment Station and Research Farm Annual Reports

No abstract provided.

Oats, E. G. Montgomery

University of Nebraska Historical Extension: Bulletin

There is no more serious question confronting .the Nebraska farmer today than the oat problem. During the past few years, farmers generally believe they have lost money on the crop. It is necessary to grow some spring grain crop, and while many are looking for a substitute, such as barley, speltz, and spring wheat, yet none of these crops takes the place of oats in a satisfactory manner. While soil fertility must receive immediate attention, still our yields would be decidedly increased thru the. use of varieties best adapted to the region, with good preparation of the seed·bed drilling with …

A New Name In Megachile, T. D. A. Cockerell

Ca

No abstract provided.

The House Fly (Musca Domestica) And Allies, Lawrence Bruner

Department of Entomology: Faculty Publications

"Of what use are flies, anyway?" This and similar questions have frequently been asked of the writer by persons who seem to think that each and every living thing has been created solely for some special benefit to man.

Primarily the common house fly (Musca domestica), together with several of its allies which habitually frequent human habitations, are scavengers. In this role they assist in the removal of filth and litter of various sorts that too often are permitted to accumulate in the vicinity of our homes, schools, offices, and ' places of business or pleasure. These flies …

Bulletin No. 104 - The Storage Of Winter Precipitation In Soils, John A. Widtsoe

UAES Bulletins

It has been found that the production of one pound of dry plant substance on soils of average fertility, requires in humid districts not more than five hundred pounds of water, and in arid districts like Utah about seven hundred and fifty pounds. This indicates that the average rainfall of Utah, which is about twelve inches, if properly conserved in the soil, is sufficient to produce annually, without irrigation, from thirty to forty-five bushels of wheat to the acre, or corresponding yields of other crops. The realization of this truth has changed greatly our views of irrigation practices. The beginning …

A Plea For The Protection Of Our Birds, Lawrence Bruner

Department of Entomology: Faculty Publications

The fact that insect depredations are increasing in extent each succeeding year makes it plain to us that something must be done to prevent it, and that quickly. We have found to our sorrow that, although we are continually making increased efforts to destroy these pests, our efforts avail but little and the destruction of our crops goes on. What, then, is to be done? How can we be released from this ever-increasing struggle for existence? The answer is plain. Heed the advice of the Naturalist who has made a study of the life-histories of the various other living creatures …