Life Sciences Commons^™

Late Or Irish Blight Of Potatoes, W P. Cass Smith

Journal of the Department of Agriculture, Western Australia, Series 3

Late or Irish Blight, caused by the fungus Phythophthora infestans, is the most destructive disease of potatoes in many countries. Fortunately it has proved to be uncommon in the main potato areas of Western Australia as suitable weather for its epidemic development seldom occurs for sufficiently long periods. The disease is encouraged by periods of warm muggy weather during the day, followed by relatively cool night temperatures.

Shot Hole Of Stone Fruits, W P. Cass Smith

Journal of the Department of Agriculture, Western Australia, Series 3

Shot hole of stone fruits caused by the fungus Clasterposporium carpel s philum occurs yearly and is more difficult to control than Leaf Curl. It is often particularly damaging on early almonds, peaches, plums and apricots which come into growth in late winter or early spring while the weather is still cold and wet.

Mesquite - Aerial Spray To Be Tested

Journal of the Department of Agriculture, Western Australia, Series 3

An intensification of the spread of Mesquite in the North-West of the State was reported by the Chief Weed Control Officer of the Department of Agriculture (Mr. G. R. W. Meadly). He stated that a spineless form of this tree had been introduced on certain North-West stations some years ago as it was thought that the plant would provide valuable topfeed in its highly nutritious pods and beans. Unfortunately, the trees had reverted to the spined type and dense thickets had developed in some areas. Approval was recently given for experiments in aerial spraying of these thickets in an attempt …

The Control Of Mealy Bug On Vines In Western Australia, P N. Forte

Journal of the Department of Agriculture, Western Australia, Series 3

The mealy bug (Pseudococcus maritimus Ehr.) was first recorded on vines in Western Australia in 1898 (A. M. Lea, 1898). Since then it has been reported present in certain years in large numbers with consequent loss of quality in the vine products.

Farm Fencing Hints - Boring The Posts, J A. Mallett

Journal of the Department of Agriculture, Western Australia, Series 3

Boring the fence-posts to take the wires is an important operation in fence construction. Unless the holes are well aligned and running parallel with the fence-line and the ground, the task of "running" the wires will be made very difficult, and the appearance and effectiveness of the finished fence will suffer.

Season Reminders, T G. Haney

Journal of the Department of Agriculture, Western Australia, Series 3

Now that the sales are over, growers should be ready to take good care of the tobacco seedlings for next season's crop. A good stand of healthy seedlings goes a long way towards an even crop, and is the first step towards better tobacco.

The Winter Pruning Of Roses, C C. Hillary

Journal of the Department of Agriculture, Western Australia, Series 3

Next to picking armfuls of blooms, I doubt whether any phase of rose growing gives the gardener greater pleasure than pruning. To cut off a misplaced branch, or to relieve the plant of worn-out wood which has already produced its share of flowers; to snip away the spindly growths and twiggy bits which overcrowd the centre of the bush; to stand off and visualise just how lovely the plant will look when covered with flowers in three months' time, only to return again and cut off an inward-growing shoot which threatens to upset the symmetry of the bush; all this …

Trees Of Western Australia - Salmon Gum And Scarlet Pear Gum, C A. Gardner

Journal of the Department of Agriculture, Western Australia, Series 3

The name salmonophloia, meaning salmon-barked, was given to this tree in 1878 by Ferdinand Mueller, the famous Australian botanist. The title of "Salmon- Barked Gum-Tree" had already been bestowed upon this tree by the early settlers, a name which apparently referred to the colour of the bark in fracture when it resembles the colour of cooked salmon flesh. The external colouration varies from a brownish pink at the end of summer to almost white in winter, usually with greyish-purple patches.

The European Corn Borer Situation In South Dakota Spring 1952, Gerald B. Spawn

Agricultural Experiment Station Entomology Pamphlets (1940-1952)

The European corn borer, which has now assumed the role of "perennial pest" in South Dakota, has been conspicuous by its inactivity during the past few months. However, it is still the major pest of corn in our state. Since last fall the larvae (worms) have been spending their time in the "deep freeze" sleep of their kind of hibernation, hidden away in the snow-blanketed stalks of last years corn fields. This is nature's way of taking care of them during the winter, and all too many of the larvae are now becoming active again.

The Use Of X-Ray And Nitrogen Mustard To Determine The Mitotic And Intermitotic Times In Normal And Malignant Mammalian Tissues, William Richard Widner

Biology ETDs

The relative times involved in the various phases of cell division is basic to problems of tissue growth, but the quantitative relation of mitotic and intermitotic times have received very little attention until recently. Even data on the quantitative comparison of mammalian growth rates are very limited. The rate of growth of any tissue is directly proportional to the number of new cells added to the tissue over and above the number of old cells being constantly destroyed.

The present study was undertaken: (1) to determine which of these two factors is responsible for differences in the mitotic index seen …

Commencement Services 1952, College Of Medical Evangelists

Commencement Programs

CONTENTS

2 | O God, Our Help - Isaac Watts

3 | Commencement Sermon

4 | Lead On, O King Eternal - Ernest W. Shurtleff

5 | Commencement Exercises

6 | Graduating Classes

Variety Every Day With Frozen Foods, Mildred Daniel

SDSU Extension Circulars

The freezing method of preserving food for. future use has been used for many years. Modem frozen foods, if proper methods of handling, packaging and freezing have been used, will be of high nutritive value and show very little change in flavor, color, and texture from that of fresh food. Freezing has advantages over other methods of preservation because foods that are frozen quickly and stored at zero will be more like fresh foods than will foods that have been either canned or dried. Canning has been a very satisfactory method of preserving food, and because of this, freezing should …

Garden Insects And Their Control, John A. Lofgren

SDSU Extension Circulars

Every garden is open to attack by insect pests at some time during the growing season. These attacks may cause severe damage if they go unnoticed and unchecked. It is important to learn to recognize these insects so that the proper control measures may be applied at the right time. Adequate fertility, clean culture, weed control, daily watchfulness and prompt treatment for insects and plant diseases, will do much to increase garden production.

4-H Home Economics : Local Leaders' Club, South Dakota State College 4-H Club Staff

SDSU Extension Circulars

One of the most important things in working with people—young people or adults—is willingness to accept a person as he is and attempt to understand him. Our job is to accept the adolescent as he is, with all his weaknesses, his carelessness, his uncertainties, his differences and his problems, and help him see the good qualities which he possesses.

Gifts, Isabel Mcgibney

SDSU Extension Circulars

Gifts—just for you. What more enjoyment is there than to select and make just the right gift for someone you love. Herein these pages are ideas for youngsters, mothers and friends.

The Influence Of Single, Two, And Three Stage Bleaching On Fading Characteristic Of Deinked Stock, Phillip H. Avery

Paper Engineering Senior Theses

A literature survey on the various bleaching methods used on deinked stock and the factors which influence the fading characteristic of deinked stock is compiled. Mention is also made of various additives which have an influence on the fading of a sheet. A description of the experimental work with caustic deinked stack of various groundwood content follows. Results indicate that the groundwood content has more effect upon fading of deinked stock than the number of stages of bleaching, although the increase in the number of stages of bleaching does reduce the amount of fading in a sheet. A greater effect …

The Evaluation Of Paper By Means Of The Densichron Instrument, Edward G. Degalan

Paper Engineering Senior Theses

An Evaluation of the Universal Magnephot Densichron as a Reflectometer, Opacimeter and Color Analyzing Device

This paper is a report on the evaluation of the Universal Magnephot Densichron, an electronic photocell instrument developed for the photographic industry, for use in the paper industry. This instrument has been found to have several errors which make its use impractical for research work in the laboratory, but it can be used in paper mills for control purposes. If this used for this type of work certain precautions have to be taken as outlined. The major portion of this paper deals with the possibility …

A Proposed Method Of Forming A Sodium Hexametaphosphate Film On The Fourdrinier Wire, Theodore Richard Kielts

Paper Engineering Senior Theses

The addition of sodium hexametaphosphate to the white water system of the paper mill is an effective method of preventing pitch deposition. The ability of this compound to prevent pitch agglomeration is due to its tendency of forming monomolecular films on metallic surfaces to which pitch will not adhere.

This thesis has attempted to evaluate whether this monomolecular protective film is best formed by spraying a solution of sodium hexametaphosphate onto the moving Fourdrinier wire or whether it is best formed by the present-day method of allowing the film to form from the white water system to which sodium hexametaphosphate …

A Comparison Of The Strength Characteristics Of Sheets Produced By Standard T.A.P.P.I. Method And By Means Of The Noble And Wood Sheet Machine, William C. Geiger

Paper Engineering Senior Theses

The first section of this paper is devoted to a literature survey in which the following sheetmaking variables, and their effects upon strength were examined: drying, tension, couching, pressing, consistency of stock in headbox, effect of differences in wire mesh, and drainage time.

The second section is composed of results obtained by personal experimental work. In order to provide an accurate comparison of the two sheetmaking machines in question, their relative differences in procedure were interchanged so as to bring out the variations in strength values for force drying versus air drying, tension during drying versus drying without tension, and …

Bulletin No. 353 - Effect Of Nitrogen Fertilizer On Yield And Protein Content Of Winter Wheat In Utah, Howard B. Peterson

UAES Bulletins

Winter what is one of the major crops of Utah. For more than 50 years winter wheat has been grown on the dry lands of the state. It is about the only crop grown on these lands under the usual alternate cropping and fallow system. Since 1941 acreage in the state has increased about 60 percent. Little or no manure is applied and only occasionally is a legume green manure turned under. It is apparent that with the original low supply of nitrogen in most of the soils of the state, together with the depleting effects of the common cropping …

Bulletin No. 354 - Marketing Of Chickens From Producer To First Handler Washington, Oregon, And Utah (1948-1949), Roice H. Anderson

UAES Bulletins

In 1949 the receipts from eggs and chickens amounted to 8.6, 6.0, and 13.2 percent of the total cash receipts from farm marketings in Washington, Oregon, and Utah, respectively. About three fourths of these receipts were from sale of eggs and one fourth from the sale of chickens. Receipts from chicken sales, while less important than from eggs, amounted to about 21.5 million dollars in 1949 in the three states. As would be expected, considering the importance of egg production in the three states, many of the chickens sold are cull layers and other chickens produced incidental to the egg …

The Muscles Of The Forearm Of Necturus, Joseph P. Harris Jr.

Field and Laboratory

Little of a completely satisfactory character has been published on the arm-myology of Necturus. Mivart (1869) dissected a single specimen, and described certain of the foreleg muscles. Ribbing (1906-07) dissected two specimens, and included some notes on the foreleg of Necturus, but most of his paper deals with Siredon and other forms. Wilder (1908, 1912) presented a good account of the muscles of the foreleg, and his descriptions will here be referred to many times. Howell (1936) and Straus (1942) discussed the anatomy of the flexor muscles of the forearm of Necturus; but they were interested in the broader problems …

A Case Of Possible Psychological Regression In The Cat, John P. Mckinsey

Field and Laboratory

A very interesting case of apparent psychological regression in the domestic cat was recently observed by the writer. An owner of cats for over twenty years, I have never before witnessed the present phenomenon.

A Case Of Monozygotic Twinning In The Spiny Dogfish, Squalus Acanchias, Joseph P. Harris

Field and Laboratory

No abstract provided.

Cynanchun. Grayi Shinners, Nom. Nov., Lloyd S. Shinners

Field and Laboratory

No abstract provided.

Clastic Limestone In The Upper Eagle Ford Shale, Dallas County, Texas, William Thomas Reid

Field and Laboratory

Flaggy strata of marine elastic limestone occur in the Eagle Ford shale at a horizon approximately 100 feet below the top of that formation in Dallas County. Anticipating the possible significance of these strata as marker beds useful in correlating the type section of the Eagle Ford here with sections exposed in other areas, a detailed description of them is given.

The Texas Species Of Palafoxia (Compositae), Lloyd S. Shinners

Field and Laboratory

Taxonomically Palafoxia is one of the most perplexing genera of Texas Compositae; phylogenetically and geograph ically it is one of the most intriguing.

Golden Shiner, Bluegill, And Green Sunfish Production In A Small Lake, Elmer P. Cheatum

Field and Laboratory

A small lake located 43 miles southeast of Dallas in Kauf­man County, owned by Dr. Ozro T. Woods, was treated with rotenone in February, 1952. With a surface area of about two acres, the lake contained 5.4 acre-feet of water, with a maximum depth of six feet. It was constructed in 1947 and filled the same year.

Notes On The Salamander, Eurycea Longicauda Guttolineata, In Florida, Donald W. Tuttle

Field and Laboratory

But little work has been published on this subspecies. This study is based on a collection made with Richard E. Etheridge in the summer of 1949. While Carr (1940) lists Eurycea l. guttolineata as uncom­ mon in Florida, we were able to collect some 180 specimens in the northern part of the State. These are now deposited in our private collections, or in the Tulane University collection.

Papers Presented At The 1952 Meeting Of The Society Of Student Geologists, George Waverly Hall Jr.

Field and Laboratory

Early this year, graduate students in the Geology Department of Southern Methodist University, aware that there was no adequate student group which could advocate and instigate a desired type of extracurricular geologic program, set about to put such a program in motion. They formed a club to be known as The Society of Student Geologists. They sought to begin a positive program of geologic activity, and to form a true honorary organization to recognize outstanding undergraduates in geology.