A Mammoth Farm. the phosphates and silicates needed in the formation of the berry and the stalk of wheat. Of course it would be impossible to operate such a farm from one headquarters so the land is apportioned into sub 41. STRAUB'S SCIENTIFIC GRAIN MILL. street Philadelphia Pa. A Canadian Gold Mine. Fig. 3STONES IN POSITION FOR DRESSING. 4 4 41. Recent Engineering Inventions. day. Fig 1STRAUB'S SCIENTIFIC GRAIN L., scientific american, 1879-01-18
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