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The Influence Of The Male On Litter Sizes, Edward N. Wentworth Jan 1917

The Influence Of The Male On Litter Sizes, Edward N. Wentworth

Proceedings of the Iowa Academy of Science

A common belief among practical breeders is that the male in multiparous species affects the number at a birth. This belief has even permeated scientific writing; many biologist apparently taking the supposed observation at face value, while others have sought biometrical proof in the various accumulations of the data regarding fertility inheritance found in biological records.

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Pioneer Plants On A New Levee. Iii., Frank E. A. Thone Jan 1917

Pioneer Plants On A New Levee. Iii., Frank E. A. Thone

Proceedings of the Iowa Academy of Science

The present paper is the third of a series of brief notes on the yearly changes in the re-vegetation of a soil area exposed by the building of a new levee in Des Moines in the spring of 1914. In the first paper the general character of the plant pioneers during the season of 1914 was discussed, with speculations as to their probable modes of travel. In the second, note was made of the replacement of the first year's dominating plant, Amaranthus retroflexus, by Chenopodium album, which gained the leadership through its earlier germination, and of the threatened overthrow of …

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The Morphology Of The Thallus And Cupules Of Blasia Pusilla, Marguerite B. Rohret Jan 1917

The Morphology Of The Thallus And Cupules Of Blasia Pusilla, Marguerite B. Rohret

Proceedings of the Iowa Academy of Science

First mention of the genus Blasia was made by Micheli Nov. Pl. Gen. 1729. Linnaeus recognized the genus and added the specific name pusilla in his Species Plantarum 1753 p. 1138. In 1759 Schmidel wrote his ''Dissertatio de Blasia.'' Hooker 1816 called the plant Jungermannia blasia but as this classification is much too broad it is not used today. Gottsche 1828 published an account of the germination of the spores of Blasia piusilla. Later Grönland published his investigations of spore germination in the leafy Jungermanniae, including Blasia in his discussion. In 1833, Nees von Esenbeck made some investigations on vegetative …

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Quarterly News Letter To The Alumni, January 1, 1917, Iowa State Teachers College Jan 1917

Quarterly News Letter To The Alumni, January 1, 1917, Iowa State Teachers College

Quarterly News Letter to the Alumni

A quarterly publication to keep graduates of the Iowa State Teachers College informed on the happenings on campus and of fellow alumni.

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In Memoriam: Arthur G. Smith; Bert H. Bailey, R. P. Baker, S. W. Stookey Jan 1917

In Memoriam: Arthur G. Smith; Bert H. Bailey, R. P. Baker, S. W. Stookey

Proceedings of the Iowa Academy of Science

No abstract provided.

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The Development Of Musk Glands In The Loggerhead Turtle, Frank A. Stromsten Jan 1917

The Development Of Musk Glands In The Loggerhead Turtle, Frank A. Stromsten

Proceedings of the Iowa Academy of Science

Musk glands were first described in turtles by Dr. William Peters in 1848, and independently, in the same year, by Rathke. The glands do not appear to be present in all turtles, but when present consist of one or two pairs according to the species of turtle. One pair is located at the anterolateral angles of the carapace, just beneath the peritoneum. The second pair, when present, is found at the posterolateral angles, one on each side. According to Peters, the secretion is a brownish, watery fluid, tasteless, but having a very penetrating odor. The glands are compared to the …

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Some New Endoparasites Of The Snake, Thesle T. Job. Jan 1917

Some New Endoparasites Of The Snake, Thesle T. Job.

Proceedings of the Iowa Academy of Science

In the fall of 19l6 a large, live specimen of Black Snake, Zamenis constrictor (Linn.), was sent from Garrison-on-Hudsen, New York, to Miss G. Van Wagenen of the State University of Iowa. In December the snake was killed and dissected. At that time three different endoparasites were found which were classified according to the present inadequate and chaotic literature on these groups, as Porocephalus globicephalus Hett, a new Renifer und a larval Gigantorhynchus.

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Quarterly News Letter To The Alumni, April 1, 1916, Iowa State Teachers College Apr 1916

Quarterly News Letter To The Alumni, April 1, 1916, Iowa State Teachers College

Quarterly News Letter to the Alumni

A quarterly publication to keep graduates of the Iowa State Teachers College informed on the happenings on campus and of fellow alumni.

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Summer Term, Twentieth Annual Session, 1916, Iowa State Teachers College Feb 1916

Summer Term, Twentieth Annual Session, 1916, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

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1916 Old Gold, Iowa State Teachers College Jan 1916

1916 Old Gold, Iowa State Teachers College

UNI Yearbooks

The student yearbook of the Iowa State Teachers College, later known as the University of Northern Iowa.

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A Modern School, Abraham Flexner Jan 1916

A Modern School, Abraham Flexner

History of Education Book Gallery

A Modern School is a 23-page occasional paper, written by Abraham Flexner and published in 1916 by The General Education Board. Flexner (1866-1959) was an American educator and education reformer. The occasional paper presented here addresses many of the perceived failings of the public school system circa 1916 and suggests several reforms. The General Education Board was established by John D. Rockefeller in 1903. According to the Rockefeller Foundation, the board was established to aid education in the U.S. without distinction of race, sex or creed, and was active in promoting the public school movement in the early part of …

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A Section Of Upper Sonoran Flora In Northern Oregon, Morton E. Peck Jan 1916

A Section Of Upper Sonoran Flora In Northern Oregon, Morton E. Peck

Proceedings of the Iowa Academy of Science

From July 4 to July 16, 1915, the writer was stationed at Umatilla, Oregon, as special field agent of the United States Biological Survey. A part of the work assigned was the gathering of data in regard to the general character of the vegetation and the listing of the species identified. Most of the facts here given were embodied in a somewhat briefer form in the official report.

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Contributions To The Geology Of Southwestern Iowa, Geo. L. Smith Jan 1916

Contributions To The Geology Of Southwestern Iowa, Geo. L. Smith

Proceedings of the Iowa Academy of Science

During the last year work on the geology of southwestern Iowa has been continued. The different outcrops in the vicinity of Stennett in Montgomery County have been visited, and important information obtained of the stratigraphy and paleonology of the Stennett limestones and the Braddyville and Platte shales. In Fremont County the exposures at Hamburg, McKissicks Grove, Mill Creek, as well as those from Opossum Creek north to Thurman have again been examined, in hopes to definitely locate the break that takes place in the strata between Thurman and the Wilson section.

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A Sheeps Brain Without A Corpus Callosum, H. A. Scullen Jan 1916

A Sheeps Brain Without A Corpus Callosum, H. A. Scullen

Proceedings of the Iowa Academy of Science

The brain in question was one from a shipment of dissecting material purchased from the Western Biological Supply Company of Omaha, Nebraska.

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Courses Of Study And Program Of Recitations, 1915-1916, Iowa State Teachers College Jul 1915

Courses Of Study And Program Of Recitations, 1915-1916, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

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Summer Term, Nineteenth Annual Session, 1915, Iowa State Teachers College Mar 1915

Summer Term, Nineteenth Annual Session, 1915, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

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Notes On Iowa Pentatomoidea, Dayton Stoner Jan 1915

Notes On Iowa Pentatomoidea, Dayton Stoner

Proceedings of the Iowa Academy of Science

The average person usually refers to almost any· kind of insect as a "bug" but, employing the latter term in its proper sense, it represents the common name of an insect which belongs to one of the largest and best represented groups in North America. All bugs belong to the order Hemiptera which name is derived from the character of the fore wings though wings are not present in all members of the order.

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Pioneer Plants On A New Levee, Frank E. A. Thone Jan 1915

Pioneer Plants On A New Levee, Frank E. A. Thone

Proceedings of the Iowa Academy of Science

A year ago this spring the city of Des Moines cut a new channel and mouth for the Raccoon River, causing it to change its course for a distance of about half a mile and to empty into the Des Moines River a little more than half that distance below its old mouth. The bulk of the excavated material was piled upon the south bank of the new channel to form a levee about fifteen feet high, sixty feet wide at the base, and twelve feet wide at the top, with a space of twelve feet intervening between the foot …

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Proceedings Of The Twenty-Ninth Annual Session Of The Iowa Academy Of Science: Staff & Committee Reports; Program Jan 1915

Proceedings Of The Twenty-Ninth Annual Session Of The Iowa Academy Of Science: Staff & Committee Reports; Program

Proceedings of the Iowa Academy of Science

No abstract provided.

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On The Lymphatic System Of The Common Rat, Thesle T. Job. Jan 1915

On The Lymphatic System Of The Common Rat, Thesle T. Job.

Proceedings of the Iowa Academy of Science

From fifty injected specimens, the gross anatomy of the Common Rat has been studied and outlined. The results of the work have further proven the studies of McClure and Silvester on the Lymphatico-venous communications in the Jugulo-subclavian district, and of Silvester on the renal vein communications, and have established two additional communications, the portal vein connection and the ilio-lumbar vein connection. The main circulation and disposition of the lymphatic system has been determined and the need of further knowledge concerning the histology of the lymph nodes, of which there appear to be two types, is pointed out.

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Leaching Of The Pleistocene Drifts Of Eastern Iowa, Morris M. Leighton Jan 1915

Leaching Of The Pleistocene Drifts Of Eastern Iowa, Morris M. Leighton

Proceedings of the Iowa Academy of Science

The term leaching is applied by glaciologists to that process of dissolving and carrying out in solution by ground water the soluble constituents of the drift, of which lime carbonate is the most notable in the Mississippi Valley. This discussion of that phenomenon is based on observations made by the writer on Pleistocene deposits of the larger part of the east half of Iowa, and in the vicinity of Chicago, Illinois.

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Flora Of The East Slope Of The Cascade Mountains, In Crook County, Oregon, Morton E. Peck Jan 1915

Flora Of The East Slope Of The Cascade Mountains, In Crook County, Oregon, Morton E. Peck

Proceedings of the Iowa Academy of Science

In the latter part of June, 1914, the writer joined a company of biological investigators and collectors, working under the general direction of Mr. Vernon Bailey, field naturalist of the U. S. Biological Survey, on a trip across the Cascade Mountains, by way of the McKenzie Pass. The purpose of the expedition was to secure certain zoological and botanical data and specimens of the animal and plant life of the region, with a view to determining the life zones of this section of Oregon, as well as to add material to the collections of the several institutions represented by the …

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Notes On The Distribution Of The Prairie Spotted Skunk In Iowa, B. H. Bailey Jan 1915

Notes On The Distribution Of The Prairie Spotted Skunk In Iowa, B. H. Bailey

Proceedings of the Iowa Academy of Science

In 1906 the U. S. Department of Agriculture published faunal bulletin No. 26 by Arthur H. Howell, Assistant Biologist of the U. S. Biological Survey on the "Revision of the Skunks of the Genus Spilogale". According to this report the only species referred to Iowa is Spilogale interrupta Raf., three specimens of which were examined from this state; one of which came from Gladbrook, and two from Marshalltown. His distributional map shows the range of this species as extending to southeastern Minnesota on the following statement by Mr. E.T. Seton "He (E. T. Seton) states that two were killed by …

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The Building And Function Of The College Museum, B. H. Bailey Jan 1915

The Building And Function Of The College Museum, B. H. Bailey

Proceedings of the Iowa Academy of Science

It is with a keen sense of how far short of the real mark he shall come that the writer aims at the center of this target. It is also with an appreciation of the situation in the average college with regard to meager funds, limited space, lack of appreciation by the authorities as well as the public, and the frequent unpreparedness along museum lines and the overworked condition of the professor of natural sciences.

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Macroscopic Fuana Of A Small Brook, D. M. Brumfiel Jan 1915

Macroscopic Fuana Of A Small Brook, D. M. Brumfiel

Proceedings of the Iowa Academy of Science

The brief paper here presented is but the first of a series of studies which the writer proposes to work out concerning the ecological relations of the animal life of Johnson County. Johnson County has been chosen as the field for observations for several reasons, among which are its availability from Iowa City and the University buildings as a center, its wealth of diversified habitats, and the most excellent work already done by Professor Bohumil Shimek in the field of plant ecology, upon which all studies of animal ecology depend, as all animals ultimately depend upon plants for food.

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Courses Of Study And Program Of Recitations, 1914-1915, Iowa State Teachers College Jul 1914

Courses Of Study And Program Of Recitations, 1914-1915, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

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Summer Term, Eighteenth Annual Session, 1914, Iowa State Teachers College Mar 1914

Summer Term, Eighteenth Annual Session, 1914, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

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Proceedings Of The Twenty-Eighth Annual Session Of The Iowa Academy Of Science: Staff & Committee Reports; Program Jan 1914

Proceedings Of The Twenty-Eighth Annual Session Of The Iowa Academy Of Science: Staff & Committee Reports; Program

Proceedings of the Iowa Academy of Science

No abstract provided.

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Our Pre-Cambrian Rocks, Charles Keyes Jan 1914

Our Pre-Cambrian Rocks, Charles Keyes

Proceedings of the Iowa Academy of Science

Terranes older than those of Paleozoic age occupy in Iowa a very small area. Attention which has been bestowed upon them is about commensurate with their relative surface extent. Heretofore, little attempt has been made to determine their broader stratigraphic relationships, their real position in the general geological column, their possible subdivision, or their role in the geotectonics of the region. It has seemed all sufficient to merely note their existence in the extreme northwest corner of the state. Yet, these very rocks now appear to have a history longer, more complicated and more vicissitudinous than any other terrane represented …

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Notes On Variation In Micranthes Texana, L. A. Kenoyer Jan 1914

Notes On Variation In Micranthes Texana, L. A. Kenoyer

Proceedings of the Iowa Academy of Science

In the spring of 1900 I discovered near Independence, southeastern Kansas, a plant which had hitherto been unreported in the state. On submitting specimens to the National Herbarium, I determined it to be Buckley's Saxifraga texana, which was discovered in Texas about 1861. The plant has since been placed in Small's segregated genus, Micranthes, and has been reported from a few widely scattered localities in north Texas, Arkansas, and southeast Missouri.

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