37 
Students pursuing the other courses of study, are expected i 
the above quantitative analyses and determinations as follows: 
• execute certain of 
n the course of 
1. Civil Engineering. Nos. 1, 2, 3, 4, 5, 6, 7, 27, 28, 29, 34, 41, 42. 
2. Mining Engineering, Nos. 1, 2, 3, 4, 5, 6, 7, 9, 10, 15,19, 22, 27, 28, 29, 41, 42, 
, 10, 11, 13, 14,15,16,19, 22, 27, 
: . Metallurgy, Nos. 1, 2, 3. 4, 5, 6, 7, 
41, 42, 43. 
. Geology and Natural History, Nos. 1, 2, 3, 4, 5, 6, 7, 9,15, 17, 18, 26, 27, 28, 
29, 34, 39, 40 and 41, 42, 43, including analyses as well as physical tests. 
STOICHIOMETRY. 
Stoichiometry, the arithmetic of C hemistry,^ is taught in a special course of lec¬ 
tures and blackboard exercises on of the first year. 
AS SAY INC 
ni'V 
During the third year the student is adm^^^kf^c Assay laboratory, where he 
is provided with a suitable table and a set of Assay apparatus ; an(l where he has ac¬ 
cess to crucible and muffle furnaces, and to volumetric apparatus for bullion assay 
by the wet process. The general principles as well as the special methods of assay¬ 
ing are explained in the lecture-room, and at the same time the ores of the various 
metals are exhibited and described. The student is then supplied with suitable 
material, ores of known composition, and is required to make assays himself. He 
first receives ores of lead, the sulpheret, carbonate, and phosphate, which he mixes 
with the proper fluxes, and heats in the furnace, obtaining a button of lead, which 
he carefully weighs, thus determining the.percentage of metal in the ore. He then 
determines by cupellation the amount of silver in the lead. Silver ores are next 
given to him, at first those which are most easily assayed, such as the mixtures of 
chloride of silver with quartz; afterwards more complex ores, such as galena, ruby, 
silver ore, mispickel, fahlerz, etc. These he is required to assay both in the crucible 
and in the scorifier. 
Ores of gold are next supplied, auriferous quartz, slates, pyrites, blende, etc., 
which are assayed by the most reliable methods. 
To facilitate the assay of ores of the precious metals a system of weights has been 
introduced, by which the weight of the silver or gold globule obtained in the assay 
shows at once, without calculation, the number of troy ounces in a ton of ore. The 
student then passes on to the assay of silver and gold bullion, the former by Gay 
Lussac’s volumetric method, the latter by “quartation” or “parting.” 
Ores of tin, antimony, and iron, are then assayed by the dry methods, when the 
course is completed. Each student thus executes two or three hundred assays him¬ 
self, under the immediate supervision of the instructor. 
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7 8 9 10 Missouri 
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