The rapid advance of concrete engineering in the
West has made necessary reliable information as to the
strength qualities of the most important marketable, sands
In the eastern states, theory and practice have advanced
hand in hand, by the investigation of the constituent
materials of concrete. In the West, no...
Alfalfa is one of the oldest of cultivated forage plants.
It was cultivated by the Greeks, Romans, Egyptians, and other
nations of the Fast before the beginning of the Christian era.
It is a native of the southern and western portion of Asia. It
was early introduced into Spain and...
One of the most important matters which face the
people of the United States at the present time is the
conservation of the National Forests. It is estimated
that at the present rate of consumption, if there is
nothing done to conserve them, or build up new ones, the
forests...
The word food is a common noun used every day and
by every one. But have you ever thought of its full significance?
Any substance that can support life or help
to support it is food. Plants require food to support
them when growing; they find it in the air...
To the North West horticulturist there is no
problem which confronts him of so great moment as that
of soil fertility; and. no phase of horticulture is
more deserving of the attention of fruit growers, than
is given at the present time to the growing of orchard.
cover crops.
Irrigation should be recognized as agricultural art of
very wide applicability and value. Its association with the
idea of desert reclamation has blinded the public mind to its
value in reginos where there is no need of reclamation. It is
a means of soil improvement to be employed, like other...
Electromagnetic engines, or motors, are machines in which the motive power is derived from electric currents by means of their electromagnetic action. The following design is for a 1½ K.W. bi-polar motor.
The rapid advancement of electrical science has led it to invade
the field of marine engineering. On ship-board, all ship's lights,
search lights and signal lights are entirely electric. Of power appliances
outside of uses on men of war,ship's ventilation is completely
electric; electric deck winches and boat cranes are...
A storage battery is a cell. or a series of cells capable of storing up electric energy and giving it off at a required time. A storage battery acts upon the same principle as a galvanic cell in giving forth electric current as the equivalent of chemical energy, but it...