Page:Science vol. 5.djvu/452

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��in quantity as will succcEsAiUy accomplish the following pur|H)sea : namely, Hrst, to illustrato, ampliry, and explain the use and bearing of the theoretical training ; and, second, by some actual esperience to eradicate the conceit and superficiality which so often follows from book- knowledge onlyi and in this way to give the student a suitable introduction to the world. Experience shows that this course gives a Btadent an Insight into Uie bearing and use of

��cally, in a laboratory for instrnction it desirable, on tlii- other hand, not to have the machines and fiirnaees run automatically, else the students will fail to gain the very experi- ence which they need.

When the students begin their work on ores in the last year of their course, they are already practised analysts, having had a three-years* training in the chemical laboratories, and a., course in assaj'ing. They are already l

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��much of his mental work, and serves as an initiation to bis profession where competition is sharp, and only Ibe most teachable and in- dustrious can survive.

The new mining laboratories have an area of floor-space of between Ave and six thousand square feet. Thej' are furnished with ap- paratus for the mechanical preparation of ores for fiiru ace- work, for Hxivialion, and for assay- .ng, each of these subjects being assigned a separate room. The machines and furnaces are arranged in a manner which an ex]>erience of thirteen years has shown to be the best for the class-work of students. While in a large establishment it is desirable lo have as many as possible of the machines run automati-

��toward actual work in eight months' time, and they fully appreciate the opporlunitj' given them to make a somewhat intimate acquaint- ance with the tools and processes of the pi'ofes* , sioDs ihey hope to follow.

A few examples of investigations which have J been made will suffice for illustration. Two I students were given gold ores to treat. Thel first one had an ore from New Hampshire | weighing 4,440 pounds : the second had ai from Nova Scotia weighing 1 .400 pounds. The problem given them to solve in the caM of each ore was as follows: 1. Is the ore i free-milling ore? 2. Is the gold in a fine, oi coarse condition? 3. How many amalgamated I plates are needed to catch tlic whole of ibeg

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