You might ask where this large volume of water comes
from.
The POLAR CAPS! During the Martian winter these extend down
nearly to the equator, and cover about five-sevenths of the
planet's surface when at maximum; and as the snowfall averages
from six inches at the edge of the caps to 50 feet at and near
the actual Poles, some idea may be gained of the amount of
moisture taken care of by these artificial waterways. Ten feet
of snow will make 12 inches of water, so there exists on Mars an
ample supply for all purposes.
(NOTE--The question as to why many of the canals germinate has
been a perplexing one to our astronomers. Lowell observed that
many of the main canals germinated a short time after the
commencement of the Martian summer, and for a time it was thought
that the phenomena might be an optical illusion, and the latter
theory was considered seriously by some observers until the
double canals were actually photographed at the Flagstaff
observatory, but the cause of the doubling was never solved until
the receipt of these revelations.)
CHAPTER IV.
PLANETARY ECONOMY
Economy is a virtue long cultivated on the Planet Mars. On your
Earth you waste more than you use, not only in food but in the
fruits of the Earth.
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