Word: spectographing
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Among the many ores which have been sent in to be tested, one discovered in Ontario by Teaching Fellow Willard C. Lacy has been found to be the richest. Investigation of the specimens by means of the spectograph, the wonder-working detecting instrument that is taking the place of chemical analysis, is under the direction of Professor Esper S. Larsen...
...description of apparatus seen in foreign schools. At the conclusion of this, an opportunity will be furnished for the members of the association to inspect some of the interesting features of the new research Laboratory, such as the 100,000 volt storage battery, Professor Lyman's ultra-violet vacuum spectograph, Professor Duane's X-ray spectograph, and Professor Bridgman's high pressure apparatus...
...Douglas, Instructor in Geology, to purchase a quartz spectograph for determining the minor constituents of minerals, ores, and rocks, and the composition of minute grains too small to be analyzed in other ways...
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