The difference in time between high water averages about 49 minutes each day.

In sandy soil, the greatest force of a pile-driver will not drive a pile over 15 feet.

A Fall of .1 of an inch in a mile will produce a current in rivers.

Melted Snow produces from ¼ to 1/8 of its bulk in water.

At the depth of 45 feet, the temperature of the earth is uniform throughout the year.

A SPERMACETI Candle .85 of an inch in diameter consumes an inch in length in 1 hour.

Silica is the base of the mineral world, and Carbon of the or-ginlifti

Sound passes in water at a velocity of 4,708 feet per second.

Metals have five degrees of lustre - splendent, shining, glistening, glimmering and dull.

A Marble-saw requires half a horse's power.