Life Sciences Commons^™

Problem Des Hummelstaates, Ludwig Armbruster

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Die Honigbienen, dieses Paradigma der Biologie, geben trotz aller "Apistik" uns noch manche Rätsel auf. So wichtige Aufschlüsse wir für eine richtige Bewertung der Bienenbiologie aus einem eingehenderen Studium der Hummeln erwarten dürfen, so lückenhaft ist - freilich relativ gesprochen - andererseits das, was wir genaueres von deren Leben und Treiben wissen.

Citrus Talks-The Future Of The Orange Industry, Charles C. Chapman

Charles C. Chapman Citrus Speeches

This is a speech read before the State Horticultural Convention in Los Angeles. Mr. Chapman offered the following observations about the future of the orange industry--that cost saving methods must be employed in the labor of handling and marketing of the fruit in order to compete with foreign markets. He also predicted that scientific methods may not only assist in finer and more uniform crops, but also in finding ways to make use of the byproducts of the orange. Increasing the export market for the orange will increase revenues and the opeing of the Panama Canal should assist with exporting …

Nachtrage Und Berichtigungen Zu Burgeff H., Kommentar Zum Katalogus Lepidopterorum (Gattung Zygaena) Im Laufenden Jahrgang Der Mitt. Der Munch. Ent. Ges. P.35-70, Max Bachmann

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Z. Erebus Stdgr. Die Fig. 18 ist, wie sich bei einem nochmaligen Vergleich mit dem Original herausstellt, durch die bei dem Stück allein vorgenommene Retouche der roten Flügelteile diesem so unähnlich geworden, daß es am besten ist, sie als nicht vor-handen zu betrachten. Als Type für die ab. interrupta hat dann die Figur Romanoff's in Rom. Mem. Lep. 1. (1884) pi. IV, f. 4 zu gelten.

Breeding Habits Of The Heteronereis Form Of Platynereis Megalops At Woods Hole, Mass., E. E. Just

Department of Biology Faculty Publications

No abstract provided.

Dramatic Elements In American Indian Ceremonials, Virginia Shropshire Heath

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

"Poetry in general," says Aristotle, "seems to have sprung from two causes, each of them lying deep in our nature-first, the instinct of imitation ..., next, ... the instinct for 'harmony' and 'rhythm.'" Many of the lyric-legend-dance complexes of certain North American Indian religious ceremonials would seem to bear out this judgment. Indeed, in not a few of the unmistakably poetic expressions, there may be found well-defined dramatic elements suggesting the possibility of a developed, independent dramatic literature, had these savage peoples been left alone to initiate a civilization and culture of their own. The South American Indians were capable …

Nachtrage Und Berichtigungen Zu Burgeff H., Kommentar Zum Katalogus Lepidopterorum (Gattung Zygaena) Im Laufenden Jahrgang Der Mitt. Der Munch. Ent. Ges. P.35-70, Max Bachmann

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Z. Erebus Stdgr. Die Fig. 18 ist, wie sich bei einem nochmaligen Vergleich mit dem Original herausstellt, durch die bei dem Stück allein vorgenommene Retouche der roten Flügelteile diesem so unähnlich geworden, daß es am besten ist, sie als nicht vor-handen zu betrachten. Als Type für die ab. interrupta hat dann die Figur Romanoff's in Rom. Mem. Lep. 1. (1884) pi. IV, f. 4 zu gelten.

Breeding Habits Of The Heteronereis Form Of Platynereis Megalops At Woods Hole, Mass., E. E. Just

Faculty Reprints

No abstract provided.

Summary Of Two Years' Study Of Insects In Relation To Pellagra, Allan H. Jennings

Harold W. Manter Laboratory of Parasitology: Library Materials

Excerpt:

With the growing interest in pellagra, following the authoritative recognition of its presence in the United States in 1907, the study of its etiology was taken up by various investigators and the several theories of causation were subjected to close scrutiny.

Prominent among these theories was that of insect transmission, first advanced by Sambon, who limited this function to the species of blood-sucking gnats comprising the genus Simulium.

The importance of the disease and the possibility of such a factor in its causation, led the Bureau of Entomology, late in 1911, to undertake an investigation of the subject …

Experimental Ingestion By Man Of Cysticerci Of Carnivore Tapeworms, Maurice C. Hall

Harold W. Manter Laboratory of Parasitology: Library Materials

Excerpt:

Having experimentally eaten the larvae of dog tapeworms on two occasions, I undertook to look up the literature on this subject in connection with the ingestion of Cysticercus pisiformis to check the frequently quoted record of T. pisiformis from man. I find that there are more cases of the sort than I had supposed, so I have collected these cases in connection with a recent similar case of my own.

Taenia pisiformis, under the name of T. serrata, has been recorded as a parasite of man by Vital ( 1874), who records, in effect, two cases. One …

The Destruction Of The Vitality Of Cysticercus Bovis By Freezing, Brayton H. Ransom

Harold W. Manter Laboratory of Parasitology: Library Materials

First two paragraphs:

The question as to the length of time Cysticercus bovis may survive after the death of its host has been quite definitely settled by the researches of Perroncito, Zschocke, Ostertag and others. Perroncito (1877) found that the cysticerci in an artificially infested calf were all dead fourteen days after the slaughter of the animal. However, Zschocke (1896) succeeded in infesting the human subject with a tapeworm by feeding five cysticerci from beef kept from fourteen to sixteen days after slaughter. No infestation followed the swallowing of five cysticerci from beef kept twenty-one days after slaughter. Ostertag (1897) …

Observations On The Eggs Of Ascaris Lumbricoides, Winthrop D. Foster

Harold W. Manter Laboratory of Parasitology: Library Materials

First paragraph:

The appearance of the ova of Ascaris lumbricoides as seen in fresh feces is so well known to physicians and zoologists that description is unnecessary. Occasionally, however, ascarid eggs are found which differ so widely from the normal egg of Ascaris lumbricoides as to cause considerable confusion on the part of observers, and may even be so misleading in appearance as to be attributed to another species. One of these atypical forms, the unfertilized egg of Ascaris lumbricoides, first reported by Miura and Nishiuchi (1902), is by no means rare, and is usually seen in the feces …

Dr. Nott's Theory Of Insect Causation Of Disease, William A. Riley

Harold W. Manter Laboratory of Parasitology: Library Materials

Excerpt:

The danger in using isolated sentences from an article as a basis for interpreting the author's theories, is generally recognized, but sometimes the most careful workers fall into the trap. Once the mistaken interpretation is published, it may be copied over and over again until it rises to the dignity of a dogma.

A striking illustration is afforded by the practical unanimity with which writers on the subject of insects and disease credit Dr. Josiah Nott with being the earliest to formulate definitely the theory of mosquito transmission of yellow fever.

Nuttall, in his classic monograph On the Role …

Variation In Oxyurias: Its Bearing On The Value Of A Nematode Formula, Stanley B. Fracker

Harold W. Manter Laboratory of Parasitology: Library Materials

Excerpt:

One of the most difficult problems in zoologic science is the classification of round worms. Authors and lecturers, after a carefully outlined and definitely arranged discussion of trematodes and cestodes, are compelled to consider nematodes in a somewhat desultory and inaccurate fashion. Two reasons for this may be given, the greater being the apparent lack of a basis for determining the phylogeny of the major groups, a condition with which we are not at present concerned. The other obstacle is the difficulty of differentiating between species and uncertainty as to the value of different kinds of taxonomic characters. The …

Rhabditin, Nathan Augustus Cobb

Harold W. Manter Laboratory of Parasitology: Library Materials

Excerpt:

Rhabditin is the term applied by the writer to an organic substance, the type form of which is found crystallized in brilliantly doubly refractive spheres arranged in a definite way in the cells of the intestine. Rhabditis monhystera Bütschli, and other nematodes, in whose metabolism it plays an important role.

Rhabditin crystallizes under the life influences of Rhabditis monhystera into spheres, about 1 to 3 microns in diameter, which are rather slowly soluble in water, rapidly so in alkalies and acids—in the latter without effervescence—and are insoluble or but very slowly soluble in alcohol, glycerin, xylol and oils. The …

Remarks By Dr. Wm. E. Leonard, Wm. E. Leonard

Journal of the Minnesota Academy of Science

No abstract provided.

Bulletin No. 135 - A Study In Annual Egg Production: Based On The Records Of A Flock Of Seven-Year-Old Hens And Their Progeny, E. D. Ball, Geo. Turpin, Byron Alder

UAES Bulletins

Experimental work in breeding for egg production was started with this flock of Single Comb White Leghorns in 1907. The flock of 1907 was hatched from eggs from a small flock that had been introduced into the plant two or three years before.

After two years' records of these flocks had been completed and studied it was found that nearly three-fourths of the first flock had made better records the second year than they did the first and that there was a great variation in the two years' records of individual hens. This raised the question of whether the first …

The Storage And Use Of Soil Moisture. Report Of Experimental Substation, North Platte, Nebraska, W. W. Burr

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The profitable cultivation of the non-irrigable lands in west central and western Nebraska is limited by the amount and efficient use of the precipitation. There are tracts of land in the sand hills and minor tracts of badly worn heavier soils where the need of soil fertility is becoming evident. But, in the main, the great problem at present is not one of soil fertility, but of how to get enough water to make use of the fertility now present. The rainfall of this section, which varies from an actual shortage to seldom more than a meager sufficiency, makes it …

Newton Horace Winchell, 1839-1914, Warren Upham

Journal of the Minnesota Academy of Science

No abstract provided.

Tributes From Early Associates

Journal of the Minnesota Academy of Science

No abstract provided.

Words Of Appreciation, O. W. Oestlund

Journal of the Minnesota Academy of Science

No abstract provided.

Some Species Of The Bee Genus Coelioxys, J. C. Crawford

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This paper discusses only species occurring in America north of Mexico and no table to separate the males has been included since Prof. T. D. A. Cockerell published a table for this sex in the Canadian Entomologist for June, 1912, pp. 167-170. The key to the females includes all the species for the region under consideration in which the female sex has been described. In the table here presented the characters used for separating rufitarsis Sm. from comstockii Cress. and lucrosa Cress. from moesta Cress. are the characters used by Prof. Cockerell in a table to separate the types of …

Citrus Talks-Citrus League, Charles C. Chapman

Charles C. Chapman Citrus Speeches

In this speech Chapman details the history and some of the accomplishments of the Citrus League. He also speaks some about the decline in interest in agriculture amongst the younger generation.

Names Applied To The North American Bees Of The Genera Lithurgus, Anthidium, And Allies, T. D. A. Cockerell

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No abstract provided.

Descriptions And Records Of Bees - Lix, T. D. A. Cockerell

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No abstract provided.

Bulletin No. 133 - Irrigation And Manuring Studies: The Effect Of Varying Quantities Of Irrigation Water And Manure On The Growth And Yield Of Corn, Frank S. Harris

UAES Bulletins

Indian corn is one of the most important crops raised by American farmers. Anything that affects the corn crop of the American farmers. Anything that affects the corn crop of the United States has an influence on the prosperity of the entire country. From an economic point of view therefore, it is important to know as much about the production of this crop as possible. The corn plant also offers an excellent field for scientific investigation independent of any economic bearing.

Hymenoptera, Superfamilies Apoidea And Chalcidoidea Of The Yale-Dominican Expedition Of 1913, J. C. Crawford

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The material here listed came, unless otherwise stated, from the island of Dominica and was collected during June and July, 1913, by Mr. H. W. Foote. As almost nothing has been recorded in the Hymenoptera from this island, the collection is of especial interest.

Bietrag Zur Kenntnis Der Bienenfauna, J. D. Alfken

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Von Herrn Dr. Jos. BEQUAERT in Brugge, dem auf verschiedenen Gebieten der Entomologie eifrigen und erfolgreichen Forscher, erhielt ich eine sehr reichhallige und interessante Sammlung von Apiden zur Beslimmung anvertraul, welche im Jahre 1910 an den folgenden Orlen Algeriens erbeutet wurden: AIger (Bab el Oued, Baraki, Birkadem, Birmandreis, Bois de Boulogne, Bouzarea, Cap Malifou, Chateau d'Hydra, Dely Ibrahim, El Biar, Foret de Bainen, Fort de l'eau, Glaciere Blidah, Gue de Constantine, Guyolville, Harrach, Hussein Dey, Jardin d'Essai, Kouba, Le Ruisseau, Maison caree, Mazafran, Mustapha, Oued Ouchaja, Sidi Ferruch), Oran (Batterie espagnole, Cap Falcon, Gambetta, La Macta, Noiseux, Port aux poules, …

On The Sedges Of Nebraska (Family Cyperaceae), John Mallory Bates

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

The sedges (Family Cyperaceae) are grass-like plants, but easily distinguished from the true grasses (Poaceae) by the following characteristics: culms solid, pithy, cylindrical, trigonous or flattened. Grass culms by contrast are mostly hollow and cylindrical. Sheaths not open lengthwise opposite the leaf blade, tightly enclosing the culm. Spikes simple or compound, mostly subtended by leaflike bracts, which are sometimes longer than the culm. Spikelets one- to many-flowered, each flower subtended and sometimes embraced by a single short herbaceous or scarious bract or scale, the most characteristic mark of this family. Fruit an achene, trigonous, lenticular, or plano-convex; …

Iv. On A New Fossil Fungus From The Nebraska Pliocene, A. C. Whitford

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

While studying the fossil woods of Nebraska, under the direction of Dr. E. H. Barbour, it was my good fortune to find an interesting specimen. This specimen is in the collection of fossil woods in the Nebraska State Museum, and was collected by Dr. Barbour from the Pliocene, or Snake Creek beds, about 20 miles south of Agate, Nebraska, during the summer of 1911.
The specimen itself is about six inches long by four inches wide and two inches thick. It has the appearance of typical agatized wood, but has numerous limonite streaks running through it. Upon sectioning the specimen, …

I. On The Distribution And Composition Of The Humus Of The Loess Soils Of The Transition Region, Morris Blish

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

The main object of this investigation has been to determine the distribution of the humus, to a depth of six feet, throughout the soils in representative virgin prairies of the so-called “transition region" of Nebraska. This region is the large area which extends westward from the Missouri River for a distance of over three hundred miles and which is covered, for the most part, with loess soil. This is, agriculturally, the most important soil in the state of Nebraska, and covers more than half the area of the state. The term "transition region" is employed to convey the idea of …