CHAPTER XXI
AN AIR SCOUT FOR ZODANGA
AS I proceeded on my journey toward Zodanga many strange and interesting sights arrested my attention, and at the several farm houses where I stopped I learned a number of new and instructive things concerning the methods and manners of Barsoom.
The water which supplies the farms of Mars is collected in immense underground reservoirs at either pole from the melting ice caps, and pumped through long conduits to the various populated centers. Along either side of these conduits, and extending their entire length, lie the cultivated districts. These are divided into tracts of about the same size, each tract being under the supervision of one or more government officers.
Instead of flooding the surface of the fields, and thus wasting immense quantities of water by evaporation, the precious liquid is carried underground through a vast network of small pipes directly to the roots of the vegetation. The crops upon Mars
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