Mausoleum at Halicarnassus, a Grecian-Persian city in Asia Minor.

HEAT AND COLD.

Degrees of heat above zero at which substances melt:--Wrought iron,
3,980 degrees; cast iron, 3,479; platinum, 3,080; gold, 2,590; copper,
2,548; steel, 2,500; glass, 2,377; brass, 1,900; silver, 1,250;
antimony, 951; zinc, 740; lead, 594; tin, 421; arsenic, 365; sulphur,
226; beeswax, 151; gutta percha, 145; tallow, 97; lard, 95; pitch, 91;
ice, 33. Degrees of heat above zero at which substances boil:--Ether,
98 degrees; alcohol, 173; water, 212; petroleum, 306; linseed oil,
640; blood heat, 98; eggs hatch, 104.

QUANTITY OF SEED TO AN ACRE.

Wheat, 1-1/2 to 2 bu.; rye, 1-1/2 to 2 bu.; oats, 3 bu.; barley, 2
bu.; buckwheat, 1/2 bu.; corn, broadcast, 4 bu.; corn, in drills, 2 to
3 bu.; corn, in hills, 4 to 8 qts.; broom corn, 1/2 bu.; potatoes,
10 to 15 bu.; rutabagas, 3/4 lbs.; millet, 1/4 bu.; clover, white, 4
qts.; clover, red, 8 qts.; timothy, 6 qts.; orchard grass, 2 qts.;
red top, 1 to 2 pks.: blue grass, 2 bu,; mixed lawn grass, 1/2 bu.;
tobacco, 2 ozs.

SOLUBLE GLASS FOR FLOORS.

Instead of the old-fashioned method of using wax for polishing floors,
etc., soluble glass is now employed to great advantage. For this
purpose the floor is first well cleaned, and then the cracks well
filled up with a cement of water-glass and powdered chalk or gypsum.
Afterward, a water-glass of 60 to 65 , of the thickness of syrup, is
applied by means of a stiff brush. Any desired color may be imparted
to the floor in a second coat of the water-glass, and additional coats
are to be given until the requisite polish is obtained. A still higher
finish may be given by pummicing off the last layer, and then putting
on a coating of oil.

DURABILITY OF A HORSE.

A horse will travel 400 yards in 4-1/2 minutes at a walk, 400 yards
in 2 minutes at a trot, and 400 yards in minute at a gallop. The usual
work of a horse is taken at 22,500 lbs. raised 1 foot per minute, for
8 hours per day. A horse will carry 250 lbs. 25 miles per day of 8
hours. An average draught-horse will draw 1600 lbs. 23 miles per day
on a level road, weight of wagon included. The average weight of a
horse is 1000 lbs.; his strength is equal to that of 5 men. In a horse
mill moving at 3 feet per second, track 25 feet diameter, he exerts
with the machine the power of 4-1/2 horses. The greatest amount a
horse can pull in a horizontal line is 900 lbs.; but he can only do
th