Letter | Published:

Sources of Potash

Abstract

SIR EDWARD THORPE'S lucid review of the known geological sources of potash (NATURE, January 3) is of absorbing interest to agriculturists, whose industry must be seriously affected by any permanent stinting in the supply of this indispensable fertiliser, entailing a corresponding diminution in the production of root crops. They might, however, tide over a temporary shortage of potash by availing themselves of a subsidiary source.

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