NegroaI find in the English papers a a Test for Guano, a in which the farmer is advised to dissolve out all soluble matter, and weigh the insoluble residue, on the ground that the amount soluble is an index of the value, and that a good sampleanbsp;...
Title | : | An essay on the history, character, and value of guano, etc |
Author | : | D. Pereira GARDNER |
Publisher | : | - 1844 |
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