Digital Commons Network^™

Archidiskodon Maibeni, Erwin H. Barbour

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

Archidiskodon maibeni was first described in Bulletin 10 of the Nebraska State Museum under the title" Skeletal Parts of the Columbian Mammoth, Elephas Maibeni." * Dr. Henry Fairfield Osborn finds it expedient to found a new genus, Archidiskodon, to include the earlier and more primitive mammoths. Hence the change in the generic name. t'Mammoths and modern elephants have long been grouped together under 'the genus Elephas. Subdividing the genus does not necessarily do away with this convenient and rather familiar old arrangement.

Test 123: Huber New Super Four 18-36, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 127: Twin City Model F T 21-32, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 129: Hart-Parr 12-24, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 121: Twin City Model Ty 17-28, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 128: Hart-Parr 18-36, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

A Specific Gravity Study Of Some Of The Southeast Missouri Lead Ores And Tailings, Robert Gibson O'Meara

Masters Theses

"The object of this investigation was to study some of the Southeast Missouri lead ores and tailings to trace the freeing of galena through all of the screen sizes. It was also desired to determine the efficiency of recovery with the present treatment and, whether or not a change to finer crushing would be advisable. In order to isolate parts of different specific gravity in the ores and tailings, heavy liquids were used"--Object of Investigation, page 2.

Comparative Value Of Various Grog Materials For The Manufacture Of Zinc Retorts, Wei-Tung T. Hu

Masters Theses

"As before stated, this present investigation, of which this thesis covers only a part, undertakes to study the comparative values of various grog materials for the manufacture of zinc retorts, having as its object to find better grog materials for the purpose than those commonly in use at the present time, and to determine the best proportions of bond clay to use with each kind of grog"--Scope of Investigation, page 4.

Geology Of Lucas County [Iowa], Alvin Leonard Lugn

Department of Earth and Atmospheric Sciences: Faculty Publications

Lucas county is in the south-central part of Iowa just east of a north and south line through the central part of the state and in the second tier of counties from the IowaMissouri line. Its position in this tier of counties is sixth east of Missouri river and also sixth west of Mississippi river. Warren and Marion counties are on the north, Monroe county is on the . east, Wayne county on the south and Clarke county on the west. It corners with Appanoose county on the southeast and with Decatur county on the southwest.

This is one of …

Robert Goddard's 1926 Diary, Robert H. Goddard

March 16, 1926: The First Liquid-Propellant Rocket Launch

A newly digitized scan of Robert Goddard's 1926 diary, the year he achieved the world's first liquid-fuel rocket launch. Goddard kept one diary for each year, from 1898 until his death in 1945. Transcriptions of key dates can be found in the section of The Papers of Robert H. Goddard titled '1925-1930: Liquid Propellant Rockets Fly'.

Please note that this is a daily diary, which only leaves a few lines to write about each day. Goddard wrote at more length about March 16th on March 17th but wrote that extra writing in a 'Memoranda' section towards the end of …

Figure 102: Two Tanks For Pressure-Operated Rocket, Winter 1926, Esther C. Goddard

March 16, 1926: The First Liquid-Propellant Rocket Launch

Photograph of two tanks for a pressure-operated rocket. The tank on the right would hold liquid oxygen that created pressure once vaporized (a disassembled view can be seen in Figure 103), and the smaller gasoline tank is on the left. These tanks would be modified in several ways leading up to the March 16, 1926 launch. Photographs of the subsequent tanks can be found in Figure 109, 110, 111, 112, 113, 114, and 115.

These were the first pressure tanks made following December 6, 1925 (the day Robert Goddard achieved the first …

Development Of A Liquid Propelled Rocket, Section Iii: December 1925 - May 1926 [Excerpt], Robert H. Goddard

March 16, 1926: The First Liquid-Propellant Rocket Launch

Excerpt from a report written by Robert Goddard tracing his development of the first liquid-propelled rocket. The full report covers 1921 to 1929. This excerpt contains most of part three which covers everything following December 6, 1925 (the day Robert Goddard achieved the first liquid-fuel rocket to lift its own weight) and May 1926. This excerpt contains everything up through March 16, 1926, the day Goddard saw the world's first successful launch of a liquid-propelled rocket.

The December 6, 1925 test used the pumps, engines, and other moving parts Goddard spent years working with and developing. Following this test, Goddard …

Test 119: Cletrac Model K 15-25, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 120: Cletrac Model K 15-25, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 122: Twin City Model At 27-44, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 124: Fordson, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test125: Cletrac Model A 30-45, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 126: Huber 20-40, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 130: Mccormick-Deering 15-30, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

An Approximation To The Least Root Of A Cubic Equation With Application To The Determination Of Units In Pure Cubic Fields, T. A. Pierce

Department of Mathematics: Faculty Publications

Approximation to the Least Root of a Cubic Bernoulli's method of approximating the largest root of an equation
(1) x³ = ax² + bx + c,
with real coefficients, is to use (1) as a scale of relation for the recursion formula A_n = aA_n-1 + bA_n-2 + cA_n-3. Successive A’s are calculated starting from any initial values. Then A_n+i/A_n for increasing values of n approximates that root of (1) which has the greatest absolute value if that root is real. The method here given for …

Test: Fordson Ricardo Engine Head, Nebraska Tractor Test Lab

Nebraska Tractor Tests

Brake horsepower test performed on the on the Waukesha Motor having a Ricardo Head for the Fordson Tractor.

The Separation Of Inorganic Salts From Food Products By Dialysis, Nicholas H. Tasto

Bachelors’ Theses

The phenomena of the separation of substances by 'Various membranes was first -discovered by Thomas Graham, who found that certain materials passed through membranes much more readily than others. This consequently afforded him a norm by which he distinguished a variety of substances. Those which passed through the membrane most readily he called crystalloids, because of their crystalline nature. Those which were retained colloids, because of their gelatinous or glue like consistency. The distinguishing factor is however not a legitimate one, because it has been proven by Dr. Kahlenberg that opposite reactions occur.

A Study Of The Lead-Sodium Alloy, Harrison Willmot

Bachelors’ Theses

The history of the alkali metal alloys does not indicate that researches into this particular field have been extensive and of a necessary consequence, methods and practices for the handling of the alkali metal alloys in general and for the sodium.

Graphic Methods For Solving Algebraic Equations, L. Tremaine Dunlap

Bachelors’ Theses

No abstract provided.

A Geographic Interpretation Of Some Of The Factors Effective In The Location And Development Of Lincoln, Nebraska, Ruth Mcdill

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Thirty-Ninth Annual Meeting Of The Iowa Academy Of Science, May 1 And 2, 1925, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

An American Fossil Giraffe, W. D. Matthew, E. H. Barbour

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

A fragment of the lower jaw of a large fossil mammal with two well-worn teeth was dug up in June 1918, at a depth of 20 feet, while digging a cess pool at Bradshaw, York County, Nebraska. This unique specimen, accessioned 7-7-18, was brought to the Nebraska State Museum by A. Archie Dorsey, and was donated by C. B. Palmet, both of Bradshaw. It undoubtedly occurred in loess, which is thickly as well. as extensively developed in this region. It is a ruminant jaw, the teeth preserved being P4 and m1. The characteristic pattern of the premolar excludes reference to …

Prosthennops Xiphodonticus, Sp. Nov.: A New Fossil Peccary From Nebraska, Erwin H. Barbour

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

During the field season of 1915, while collecting, a mile or two west of Valentine, Cherry County, Nebraska, Messrs. A. C. Whitford and J. B. Burnett secured for the Morrill-Maiben Palaeontological Collections, The Nebraska State Museum, The University of Nebraska, a finely preserved jaw of a small fossil hog, or peccary, belonging to the genus Frosthennops, accessioned No. 85-11-8-15B. & W.

The mandible under consideration was preserved in fine sand and is without blemish save that the condyle and coronoid are wanting. The dentition is perfect. In allusion to the sword-like tusks, which are unduly large, the species name xiphodonticus …

Total Solar Eclipse, January 24, 1925, Halsey Dewolf

Fulton/Howe Collection

On January 24, 1925, a total eclipse of the sun was visible throughout much of New England. This account, written by Halsey DeWolf, describes the eclipse as viewed from Watch Hill, Rhode Island.

The Sunspot V.11 1925-1926, J. S. Ricard

The Sunspot

No abstract provided.