 | 1884 - 656 페이지
...on the other an endless female screw. These are set in pivots cut in a strong plank which is fixed at one edge of the bottom of a pit two or three feet deep. The pit is large enough to hold, besides the press, the boiling apparatus and the workmen. The male... | |
 | Henry Griscom Parsons - 1910 - 256 페이지
...manure. — In closely settled communities Photo by the Author Cover manure with earth to avoid flies Dig a pit two or three feet deep and large enough to contain the manure. Put the manure in, pack it down well and cover with two inches of earth. If manure is to... | |
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The male screw cylinder is about a foot higher than the female and into its head a horizontal bar is let to Chapter IV. Agriculture. CROPS. Wheat. Sugarcane. Chapter IV. Agriculture. CROPS. Sugarcane. Ragt. 