d the "mint mark." The U.S. coins struck at the parent mint, at
Philadelphia, bear no such mark; those displaying a small "S"
immediately under the denomination are coined in San Francisco, while
"C.C." stands for Carson City, and "O" for New Orleans.

EX-CONFED.--A glue well adapted for any work which requires particular
strength is made by dissolving an ounce of the best isinglass, by the
application of a moderate heat, in a pint of water. After straining this
solution an ounce of the best glue, previously soaked in water for
twenty-four hours, and a gill of vinegar should be added. After all of
these materials have been brought into a solution, the mixture should be
allowed to boil up once, and then the impurities must be strained off. A
handy method of making glue for ready use is to employ common whisky
instead of water in dissolving any quantity of glue. Put both together
in a bottle, cork it tight and let it stand for three or four days, when
it will be ready for use without the application of heat.

BIRDIE HAIGHT.--1. The American swan breeds in the northern parts of
America, and its migrations extend only to North Carolina. Another
American species is the Trumpeter Swan, breeding chiefly within the
Arctic Circle, but of which large flocks are seen in winter as far south
as Texas. It is smaller than the common swan, which is found in its wild
state in Asia and the eastern parts of Europe. In a half-domesticated
state it has long been a common ornament in lakes and ponds in this
country and Europe, more especially the latter. The black swan is a
native of Australia. 2. Varicose veins, it is said, may be radically
cured by a surgical operation, but the disease may reappear in some
other portion of the body, there being no way to prevent it. 3. Papua,
or New Guinea, is the largest island in the world. Australia now ranks
as one of the grand divisions of the earth.

S.A.M.--Eighteen articles on electricity have been published in this and
previous volumes. They were: "A Cheap Electrical Machine," Vol. II, No.
22; "How to Make a Simple Electrical Machine," Vol. VI, No. 3;
"Experiments of Various Kinds," Vol. VI, No. 4; "A Storm in a Teacup,"
Vol. VI, No. 9; "The Leyden Jar and How to Make It," Vol. VI, No. 20;
"The Electrician at Home," Vol. VII, No. 16: "A Mysterious Alarm," Vol.
VIII, No. 14; "Studies in Static Electricity," Vol. IX. No. 30, "How to
Make an Electrical Machine," Vol. IX, No. 20; "How to Make an Elec