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Progress In The Control Of Cotton Fireweed, Geoffrey A. Pearce

Journal of the Department of Agriculture, Western Australia, Series 4

Cotton Fireweed (Erechtites quadridentata) is native to Western Australia and was first collected by Drummond before 1850. In its natural habitat it is quite insignificant and passes unnoticed.

Cotton fireweed, a native perennial plant, has become a serious weed in the south coastal districts and is now one of the most widespread weeds in the State.

The Doublegee, G R W Meadly

Journal of the Department of Agriculture, Western Australia, Series 4

DOUBLEGEE, like a number of other major weeds, is native to South Africa. It was introduced to Western Australia during the first years of settlement.

There is no more troublesome weed in Western Australia than doublegee. It competes strongly with crop and pasture and its spiny fruits penetrate the hoofs of stock, causing lameness.

The Generic Position Of "Boisduvalia Tasmanica", Peter H. Raven

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Obligate Azygospore Formation In Two Species Of Mucor (Mucorales), Richard K. Benjamin, B. S. Mehrotra

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Study Of Proteinuria: Isolation Of Proteins From The Nephrotic Syndrome, Merrill C. Raikes

Senior Scholar Papers

One of the most puzzling phenomena of abnormal renal physiology is the occurrence of the nephrotic syndrome. The syndrome has been defined by a collection of clinical and pathological symptoms, but there is no correlation between the clinical and pathological symptoms nor is the etiology of the syndrome known. Proteinuria is probably the most distinguishing feature in the nephrotic syndrome, and there are two possible explanations for its occurrence: (1) the excessive amounts of protein found in nephrotic urine could be due to an increased basement membrane permeability in the glomerulus of the kidney or (2) dysproteinemia. An attempt has …

Literature On The Vegetation Of Arkansas, Edward E. Dale Jr.

Journal of the Arkansas Academy of Science

No abstract provided.

The Bdellidae (Acarina) Of The Australian Realm, Warren T. Atyeo

Bulletin of the University of Nebraska State Museum (1924–2023)

Although primarily a systematic study, variations in the integumental striae and chaetotaxy of the legs are discussed. The genus Octobdellodes Atyeo, 1960 is synonymized with Bdellodes Oudemans, 1937 and the sugenus Cytobdella Mihelcic, 1958 is synonymized with Cyta von Heyden, 1826. The genus Bdellodes is divided into the subgenera Bdellodes and Hoploscirus Thor, 1937 (=Thoribdella Grandjean, 1938, new synonymy). Twenty-two species are now known to occur in New Zealand and the outlying islands. These include four known species: Bdella iconica, Bdellodes (Roploscirus) lapidaria, B. (R.) reticulata, and Cyta latirostris, and eighteen new species: Bdellodes (Bdellodes) harpax, B. (B.) oraria, …

Genetic Recombination In Pneumococcal Transformation: The Role Of Integrity And Heterogeneity Of Deoxyribonucleate Molecules, As Reflected In Kinetic Analysis, Joan Louise Kent

Student Theses and Dissertations

Pneumococcal transformation has been used to study intramolecular genetic recombination. A kinetic technique is developed whereby the cumulative number of multiply-marked transformants is measured as a function of the duration of exposure to a multiply-marked DNA. Transformants accumulate with time at a rate characteristic of the particular markers and the number of DNA particles involved, thus singly-marked transformants accumulate linearly with time of exposure to DNA, as do some multiply-marked transformants. Other unlinked pairs of markers accumulate exponentially with time, by a second-order process, at a rate very close to that expected from random interaction of one cell with two …

The Role Of Time Variant Resistance And Electromotive Force In Ionic Systems Related To Cell Membranes: The Excitability Properties Of Frog Skin And Toad Bladder, Alan Finkelstein

Student Theses and Dissertations

Central to the modern theory of the electrical properties of cells is the permeability of the plasma membrane to the ions passing across this structure; it has been our purpose to explore, both theoretically and experimentally, the physical implications of this point-of-view. The cornerstone of our analysis has been the fundamental flux equations of Nernst and Planck, which describe the movement of ions in solution subject to gradients of electrochemical potential. As a direct consequence of these equations, we have seen that the potential difference between two points in a solution is the sum of two terms: an intrinsic electromotive …

Animal And Plant Viruses With Double-Stranded Ribonucleic Acid, Peter Gomatos

Student Theses and Dissertations

Reoviruses occur widely in the respiratory and enteric tracts of man and animals, but their relation to disease is not clear. The present study concerns the physical-chemical characteristics and interaction with cells of reovirus type 3. A main objective of the study is to relate some of the distinguishing biological characteristics of the virus to the structure of its RNA. Reoviruses are medium-sized, icosahedral viruses with a diameter of 75 mμ, and they contain RNA. The protein coat of the virus is composed of either 5- or 6-sided prismatic subunits, 92 in all. Each structural subunit of the protein coat …

Biochemical And Biological Studies On The Growth Of An Rna Containing Bacteriophage, Stephen Cooper

Student Theses and Dissertations

The growth of the RNA-containing bacteriophage f2 has been studied. DNA synthesis appears normal after phage infection. It is possible to dissociate the synthesis of viral RNA from the synthesis of DNA using thymine-less bacteria with fluorinated pyrimidines and Mitomycin C as inhibitors of DNA synthesis. It is concluded that the growth of f2 is independent of DNA synthesis. Since the phage RNA has no special characteristics, its synthesis has been followed by using p32 to label RNA which is eventually incorporated into virus particles. Using this method of measuring phage RNA synthesis, it has been shown that the material …

Studies On Delayed-Type Hypersensitivity Including Attempts To Effect Transfer In Guinea Pigs With Subcellular Materials, Barry R. Bloom

Student Theses and Dissertations

The initial observation that delayed-type hypersensitivity could be transferred from an allergic to a normal animal by means of living white cells was made at The Rockefeller Institute many years ago. Since that time it has been recognized that cellular transfer appears to be a unifying principle underlying both contact dermatitis and tuberculin hypersensitivity. Later studies in man have suggested that the phenomenon can be reproduced with use cell-free extracts. Similar attempts have been made with extracts of cells from sensitized guinea pigs but, there exist only three reports in the literature which claim that transfer of contact or tuberculin …

Bracken Fern Poisoning In Cattle, P B. Lewis

Journal of the Department of Agriculture, Western Australia, Series 4

ONE of the major problems facing farmers in the South-West of Western Australia is the hazard of bracken fern poisoning.

Bare Patch And Poor Emergence Of Cereals. 4. Quality Of The Seed, S C. Chambers

Journal of the Department of Agriculture, Western Australia, Series 4

The importance of using fresh good quality grain for sowing wheat crops was emphasised by results obtained in recent plot trials.

Seedling emergence was less for broken, pinched and small types of seed than for large grain and was further reduced with ageing of the seed.

Ant Pests In Western Australia, Clee Francis Howard Jenkins

Journal of the Department of Agriculture, Western Australia, Series 4

THERE are many different species of native ants in Western Australia, but few of these are of major economic importance.

Several introduced species however, have spread extensively and have proved troublesome both as agricultural and household pests.

Trees Of Western Australia. 101. The Salt River Mallett (Eucalyptus Sargentii Maiden). 102. The Two-Winged Gimley (Eucalyptus Diptera C.). 103. Eucalyptus Burdettiana Blakely Et Steedman. 104. The Moort (Eucalyptus Platypus Hook), Charles Austin Gardner

Journal of the Department of Agriculture, Western Australia, Series 4

WITH the ever-increasing spread of salt in certain poorly-drained soils in Western Australia, any plant which tends to restrict salt encroachment is of considerable economic importance.

In the genus Eucalyptus there are a few trees which will withstand a certain degree of soil salinity.

Spraying For Grasshopper Control, T J. Tozer

Journal of the Department of Agriculture, Western Australia, Series 4

A BIG increase in cereal growing in the "hopper" belt has brought a general improvement in the grasshopper situation over the past few years.

This highlights the emphasis entomologists have placed on cultivation as the best known way of controlling grasshoppers.

The Webworm. 2. The Biology Of The Webworm, J A. Button

Journal of the Department of Agriculture, Western Australia, Series 4

A detailed knowledge of the seasonal history of an insect pest is essential for an understanding of the way in which it is affected by various management and cultural practices.

Evicting Bees From Houses, A C. Kessell

Journal of the Department of Agriculture, Western Australia, Series 4

EACH year the Apicultural Branch receives several inquiries from harassed householders about how to get rid of bee colonies which have nested in houses.

Cavity walls often provide cosy quarters for swarms seeking: a home, while others establish themselves in chimneys, ventilators and under floors.

Weeds In Lawns. 2. The Control Of Weeds In Lawns, Geoffrey A. Pearce

Journal of the Department of Agriculture, Western Australia, Series 4

M OST lawns have weeds growing in them at some time during the year and in some lawns weed control becomes a major problem.

To the many people who like to keep a weed free turf it is therefore encouraging to know that nearly all weeds can be controlled with herbicides.

Wallaby Control In The Kimberleys, C D. Gooding

Journal of the Department of Agriculture, Western Australia, Series 4

EXPERIMENTS aimed at controlling sandy wallabies along the Fitzroy River frontage were started in 1952 by officers of the Agriculture Protection Board.

This work was undertaken in response to requests for assistance from some of the station owners and managers between Derby and Fitzroy Crossing.

The Webworm. 4. Control Of The Webworm, J A. Button

Journal of the Department of Agriculture, Western Australia, Series 4

EARLIER articles in this series have provided a broad oatline of the biology, life history and ecology of the webworm.

In this article chemical and cultural methods of control are considered in relation to this background information.

Pruning Citrus Trees, D B. Argyle

Journal of the Department of Agriculture, Western Australia, Series 4

PRUNING is one of the less important operations in citrus culture but if properly carried out it can contribute to the economy of production and the general wellbeing of the orchard.

Milking Routine, G R. Olney

Journal of the Department of Agriculture, Western Australia, Series 4

IT is well known that the condition of the milking machine is important for efficient and hygienic milking, but even with a machine in good condition good management during the milking process plays a leading part.

Sixth Random Sample Laying Test : 1962-63 : Poultry Research Station, Wembley, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

SIXTH RANDOM SAMPLE LAYING TEST, 1962-63

POULTRY RESEARCH STATION, WEMBLEY

SIXTH PROGRESSIVE REPORT TO 3rd NOVEMBER, 1963

Average age of birds 464 days or 66 weeks and 2 days.

A Progress Report On Commercial Cotton Growing On The Ord River Project, William John Toms

Journal of the Department of Agriculture, Western Australia, Series 4

The recommendations given in this article have been built up from the experience of the author in growing 200 acres of cotton in the Ord River area during the 1962-63 season for the Department of Agriculture, from findings made by Kimberley Research Station, and from discussions with the present farmers in the area.

When a new form of agriculture is introduced into a new area techniques and ideas change rapidly as farmers become acquainted with their new environment and the new crops. The recommendations will therefore require constant revision.

Beef Cattle Progress Report, E. F. Frolik, H. H. Kramer

Nebraska Beef Cattle Reports

Shipping fever is a respiratory disease "complex" of cattle. The disease causes extensive economic losses from death, loss of physical condition, inefficient feed utilization and treatment expense. The annual loss from this disease in the United States has been estimated to be $25,000,000.

In many respects shipping fever is similar to respiratory diseases of humans. It may occur in any season of the year, but is most common in the fall and early winter. Although any age animal may be infected recently weaned calves and feeder cattle which have just been moved from the range to feedlot are most susceptible.

New Species And Records Of Little-Known Species Of Melissodes From North America (Hymenoptera: Anthophoridae), Wallace E. Laberge

Bulletin of the University of Nebraska State Museum (1924–2023)

Two new species from Mexico, Melissodes (Tachymelissodes) sonorensis and M. (Melissodes) tescorum, are described in this paper. The previously undescribed males of M. cerussata LaBerge and M. baileyi Cockerell are described. Notes concerning the key to species of the subgenus Callimelissodes are given. New records of the following poorly known species of Melissodes are included: M. opuntiella, M. sphaeralcea, M. fimbriata, M. baileyi, M. apicata, M. mitchelli, M. intorta, M. flexa, M. maesta, M. cerussata, M. expolita, M. fasciatella, M. floris, M. …

Deltoptila, A Middle American Genus Of Anthophorine Bees (Hymenoptera, Apoidea), Wallace E. Leberge, Charles D. Michener

Bulletin of the University of Nebraska State Museum (1924–2023)

A third genus in the tribe Anthophorini in the vI/estern Hemisphere, genus Deltoptila, is described in this work. Previously described species included in the genus are as follows: D. melanopyrrha (Dours), D. elefas (Friese), D. fulva (Smith), D. bombyformis (Smith), D. montezumia (Smith), D. aurulentocaudata (Dours), D. agilis (Smith), D. costaricensis (Friese). New descriptions and records are given for D. montezumia, D. aurulentocaudata, D. agilis and D. costaricensis. Two new species are described: D. afimbriata and D. pexata.

T.H. Huxley: The Agnostic, Esther Belyeu

Theses

The author offers a biographical sketch of T.H. Huxley, known as "Darwin's Bulldog," his stance on evolution and religion, including an exposition of agnostic philosophy.