This subject was treated of in a very interesting and
instructive article entitled "Working One's Way Through College," in No.
15 of the volume just ended. In it will be found many such plans, which
will prove of great benefit to those intending to thus gain a collegiate
training. 2. The Constitution does not require candidates for government
positions to possess a college education--in fact, comparatively few
heads of departments, commissioners, etc., are thus equipped. 3. There
are no "free trade" colleges in the United States. We do not know of the
existence of such institutions in any part of the world.
L.G.C.H.--1. In soldering, the edges of the metals to be put together
must be perfectly clean, to insure which, as well as to counteract the
oxidization which most metals undergo when heated, a flux is used which
neutralizes these otherwise serious impediments, securing a firm joint.
Borax, rosin, sal-ammoniac, common salt, limestone, glass and several
other substances are used for this purpose, according to the nature of
the metal used. Rosin or oil is usually employed in soldering tin and
lead, while a mixture of muriate of zinc and sal-ammoniac is used with
steel.
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