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Report On A Portion Of The Soda Springs Mining District In Bernalillo County, New Mexico, Edmund Ross

Earth and Planetary Sciences ETDs

No abstract provided.

Bacteria In Relation To Every Day Life., Inga Werness

Electronic Theses and Dissertations

It is to be noticed that if there be any marshy places, certain animals breed there, which are invisible to the eye and yet getting into the system through the mouth and nostrils cause serious disorders." This quaint observation is taken from a manuscript written over two thousand years ago, showing that bacteria even if not seen, were living and active. Latin writers of about the same time recorded a relation between insects and malaria which has but lately been proved and explained. The infectious character of leprosy has long been recognized, since the ancient Hebrews caused the isolation of …

The Early Missionary Work Of The French Jesuits In North America., Edward Thomas Poulson

Electronic Theses and Dissertations

There are perhaps but few passages in history that are more striking than those which tell of heroic efforts of the early French Jesuits to convert the Indians of North America. Many of these efforts are full of dramatic and philosophic interest, and they also bear strongly upon the political destinies of America. While the small young colonies of England still clung feebly to the shores of the Atlantic, events, almost wholly unknown to them, that would eventually have great bearing upon their future, were in progress in the very heart of the continent, the main participants being the French …

A Method Of Obtaining Lead Concentrates From The Slimes Of The St. Joseph Lead Mill, Lewis Alfred Delano

Professional Degree Theses

"In the concentrating of lead ores, the water used in the mills carries the tailings from the jigs and tables to chatt tanks. Here the chatts and sands settle while the greater part of the water overflows and enters a sluice or slimes branch to the settling ponds. This overflow water carries with it a great deal of float lead. It is impossible to catch this lead in the mill on moving machinery without using too much power and mill space to effect a profitable saving. Ninety percent of this float will pass through a 140 mesh sieve. there will …

Economic Investigation Of The Lignites Of The Dickinson, N.D. Area, Glenn Beckley Morgan

Professional Degree Theses

No abstract provided.

The Relation Of The Composition Of A Mineral To Its Properties, Edwin Phelps Murray

Professional Degree Theses

"The attempt has been made to bring together and to classify the properties of minerals and to show that there is some simple qualitative relation between their composition and physical properties, or in other words, to show that minerals containing different percentages of a certain element will all have similar properties dependent upon the proportion of that element. Further investigation of this subject would be in determining the modifying influence of crystal form"--page 1.

Geology Along The St. Louis And San Francisco Railroad From Rolla To Newburg, Victor H. Hughes

Bachelors Theses

"The area, the geology of which, constitutes the subject of this Thesis, lies between the towns of Rolla and Newburgh sic , in Phelps Co., Missouri, and is contiguous to the St. Louis & San Francisco Railroad for its entire distance"--Text of Thesis, page 1.

The Microstructure Of Drill Steel, Arthur L. Pollard

Bachelors Theses

"The object of this thesis was to determine the microstructure of the various grades of steel used in rock drilling and to obtain if possible some general relation between the structure, composition, and hardening temperature. About 35 of the best known grades of tool steel having a carbon content of about 1 per cent or containing an equivalent hardening agent"--page 2.

A Study Of Some Problems In Assaying, Aaron Max Shah

Bachelors Theses

"It is known that the lead button which we obtain from fire assay for silver does not represent the true value of the ore. There is always a loss of silver. To investigate the effect of varying the fluxes on the loss in silver is the object of the first part of this thesis...Silver ores often contain copper, part of which, during the fusion, enters the lead button, causing trouble during cupellation, since it must be done at a high temperature. It is, then, important to keep copper out of the lead button. The presence of litharge in the fusion …

Minerals And Their Environment Of Formation, Deforrest Don

Bachelors Theses

"The history of mineralogy began with the development of mining and the use of certain minerals as useful products, such as lime, pigments and precious stones. In order to know how to distinguish these minerals when found and where they were likely to found, it was necessary to study the nature, properties and the modes of occurrence. In order to determine all these properties, it was necessary to classify and compare them with the purpose of ascertaining how they resemble each other, and how they differ"--page 1.

Steinmesch Hindered Settling Classifier, Jesse Herman Steinmesch

Professional Degree Theses

"The construction of the single classifier is well shown in the attached blueprint.

On the print it will be noted that the classifier is divided into two general parts, an upper hopper-shaped chamber GFED, and a lower portion consisting of the flat tube C, encased by the chamber A. Between upper and lower portions is the gasket L which serves to make a close joint between them, and also by forcing C downward, to make tight joints between A and C at both top and bottom. L is made of 1 ½” board. At D is a plate of #12 …

The Nature Of Moral Law, W. G. Colgrove

Digitized Theses

No abstract provided.

Chemical Analysis Of Foods And Their Adulterants: Being An Investigation Into The Nature, Relative Value And More Common Forms Of Adulterations Of Certain Foods, William Samuel Long

Chemistry Honors Papers

This 26 page thesis examines the composition, natural variations, and artificial variations of various foods.

History Of The Settlement Of Swedes In North Dakota, Myrtle Bemis

Theses and Dissertations

No abstract provided.

The Induction Motor In Theory And Practice, Robert Francis

Theses and Dissertations

No abstract provided.

General Method Of Procedure In The Working Out Of The Uncompahgre Valley Project, Colorado, Leo J. Foster

Masters Theses

"On the 17th of June 1902, Congress passed an act which may have appeared of little moment at that time, but which is not attracting the attention of the people of the United States. It is known on the Statute Books as the Reclamation Act and its purpose is to provide a Reclamation Fund, the said fund being used only to examine and construct Irrigation Works in certain Western States and Territories. This Act provides that the proceeds of the sale of public lands in thirteen States and three Territories, known as the Public Land States, less a deduction of …

The History Of Fort Totten, Charles Denoyer

Theses and Dissertations

No abstract provided.

The History And The Development Of The Cyanide Industry, Horace T. Mann

Masters Theses

"The accompanying thesis is a compilation from articles published n the magazines and from books. Where no references are given, the statements are the impressions gained from reading several articles on the same subject. None of the work originated with myself"--page [ii].

Test Of Any Internal Combustion Engine, Frank B. Holmes, James H. Turner

Undergraduate Theses and Senior Projects

No abstract provided.

A Comparison Of The Solvents Used In The Hydrometallurgy Of Silver, Simon Jochamowitz, Enrique Cavazos

Bachelors Theses

"Potassium cyanide solutions, hyposulphite of soda solutions, and a mixture called the Russell solution, are the solvents most used to win silver from its ores. We are not the first to attempt comparisons of the solvent powers of the different solutions named. It is difficult, at least we have found it difficult, to find tabulated, a comparison of the various solvents from the points of view of speed of action, of consumption of reagents, of suitability of one or another to a given type of ore"--page 1.

Investigation Of Hindered Settling Ratio Of Galena, Sphalerite And Pyrite As Compared To Quartz In Air, Ralph Wilheim Watson, William Danels Clarke

Bachelors Theses

"The object of this thesis is to determine the hindered settling ratios in air, of Galena, of Pyrite, and of Sphalerite as compared to Quartz"--Problem, page 1.

The Volatilization And Absorption Of Silver Chloride, Edgar Joseph Wolf, Victoriano Elicano

Bachelors Theses

"The purpose of this thesis was to study the relation of the loss of silver chloride to such variables as the temperature, as the type of gangue, as the method of carrying on the roast; to determine what becomes of the silver lost and to attempt to recover it. In our work we consider something seemingly overlooked by many, if not all of the workers; namely, that there is a great loss of silver chloride due to absorption, as well as to volatilization. Volatilization has been the hobby of most of the experimeters. We hope to show as a part …

A Study Of The Losses Of Gold During Cupellation In The Presence Of Tellurium, George Albert Easley, Carl Winthrop Keniston

Bachelors Theses

"It is generally accepted that the presence, in the lead button, of a small amount of tellurium causes, during cupellation, a loss of gold. Little, however, is known as to the loss, when tellurium is present, due to variation in the temperature of cupellation...Our work was carried on with the intention of determining the loss of gold, due to temperature in the presence of known amount of tellurium and to compare this loss with that caused by the temperature alone. Has temperature the same, a greater, or a less effect on the loss of gold during cupellation when tellurium is …

Effect Of Certain Minerals On Fire Assay Of Lead, Earl Mccolloch Smith, Rowe Francis Mccrae

Bachelors Theses

"Our problem was to determine the affect in the lead assay of certain minerals commonly accompanying lead ores. The minerals used were calcite, pyrite, blende and chalcocite"--page

Design And Details Of Elevated Steel Tank, William A. Baueris

Bachelors Theses

"An effort has been made in this work to furnish complete plans and specifications for a steel structure which could replace the concrete reservoir on natural elevation north of Rolla, attention being given to capacity and relative elevations. A comparison of these two structures regarding relative advantages and disadvantages is herein given, with the intention of providing some foundation as a source of choice between these two classes of structures"--page 2.

The Cyanidation Of High Grade Gold And Silver Concentrate, Reginald Henry Brinton Butler, John Warren Beard

Bachelors Theses

"The cyanidation of high grade gold and silver concentrate is a subject that has lately been attracting the attention of metallurgists in different parts of the world, and offers an interesting field for investigation and research. The inducements are especially strong in districts at log distances from the smelter, and where high freight rates and excessive treatment charges obtain"--page 1.

A Study Of The Settlement Of Slimes, William Simpson Hall, James Crawford Compton

Bachelors Theses

"The purpose of this thesis, as originally planned, was to determine the effect produced by certain substances called electrolytes upon the mill product known as "slimes". The subject presented an ever increasing number of new problems as it progressed and some work along the line of several of these branches is embodied in the following pages. Reports of investigation and behavior of slimes when treated for quick settlement are few and unsatisfactory. Our results may prove nothing already unknown, but the fact that so little data is easily accesible sic has been the motive for this thesis"--Preface, page 1.

Timbering In The Warren District, Cochise Co., Arizona, Fred Tete Boyer

Bachelors Theses

No abstract provided.

Radiation Losses In Metallurgical Furnaces, Frank Richard Loveridge

Bachelors Theses

"The conduction and radiation of heat are of great importance in metallurgy. Metallurgical operations require, in the great majority of cases, temperatures above those of normal atmospheric conditions. Loss of heat is loss of dollars. Furnaces of all kinds allow to pass their walls a greater or less amount of heat, i.e. heat is lost by conduction and by radiation. This heat is often spoken of as radiation loss. It is due to the heat being conducted from the inside to the outside of the furnace. The materials of construction, and manner of building the furnace has much to do …

Technical Analysis Of Corn Products, Roy Hayward Dewaters

Bachelors Theses

"This thesis treats of the technical analysis of the products of corn as used in practical work in the manufacture of starch and glucose. These notes are the results of special investigation carried on along this line"--page 1.