OCR Text |
Show Cutting the Cost of Fertilizers S t . , i. v ft The buHls of practically all mixed fertilizers is phosphoric acid, which Is obtained from phosphate rock. While this country has larger deposits of this mineral than any other nntlon, we are throwing away several million tons an-nually an-nually because of the present methods of preparing phosphate fertilizer. The scientists of the bureau of soils, department of agriculture, are engaged in working out economical methods of eliminating this tremendous loss. The photograph shows an oll-burnlng furnace with auxiliary equipment for U19 production of phosphoric acid. |