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Crystallization Of Magmas, Norman L. Ohnsorg
Crystallization Of Magmas, Norman L. Ohnsorg
Bachelors Theses
"The object of this paper is to arrive at a better explanation of the segregation of magmatic solutions on cooling. In which magmas will be discussed from a chemical and metallurgical lien of reasoning, in showing why such minerals as apatite, magnetite, etc., having a comparatively low melting point, crystallize cut before feldspar and quartz, which have a comparatively high fusion point"--page 1.
A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry
A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry
Bachelors Theses
"In this Thesis my object has been to ascertain the silver losses in cupellation with different kinds of cupel material, thereby determining the effeciency sic of the materials in the four kinds of cupels used. When I began the work I though the losses would be about equal in all cupels, but was surprised to find such a great difference. I refer the reader to the curves to see what really happened"--page i.