 The first colonists of Virginia found a country, the soil of which was similar to that mentioned above; harvests of wheat and tobacco were obtained for a century from one and the same field without the aid of manure, but now whole districts are converted...  Proceedings of the Yorkshire Geological Society - Seite 94von Yorkshire Geological Society - 1849Vollansicht - Über dieses Buch
 | United States. Patent Office - 924 Seiten
...century from one and the same field without the aid of manure; but now whole district are converted into pasture land, which, •without manure, produces neither...tobacco. From every acre of this land there were removed in'the space of 100 years, 1,200 Ibs. of alkavies in leaves, grain, and straw; it became unfruitful,... | |
 | 1842 - 1036 Seiten
...obtained for a century from the same field without the aid of manure ; but now whole districts arc converted into unfruitful pasture land, which, without...manure produces neither wheat nor tobacco. From every (Scotch) acre of this land there were removed, in the space of 100 years, about 2,b'40lbs. alkalies... | |
 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1840 - 414 Seiten
...mentioned above ; harvests of wheat and tobacco were obtained for a century from one and the same field without the aid of manure, but now whole districts...acre of this land, there were removed in the space of one hundred years 1200 lbs. of alkalies in leaves, grain, and straw ; it became unfruitful therefore,... | |
 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1840 - 420 Seiten
...mentioned above ; harvests of wheat and tobacco were obtained for a century from one and the same field without the aid of manure, but now whole districts...without manure produces neither wheat nor tobacco. Prom every acre of this land, there were removed in the space of one hundred years 1200 Ibs. of alkalies... | |
 | 1842 - 604 Seiten
...quotation). " Harvests of wheat and tobacco were obtained for a century from one and the same field without the aid of manure ; but now, whole districts...acre of this land there were removed, in the space of one hundred years, 1200 Ibs. of alkalies, in leaves, grain, and straw; it became unfruitful, therefore,... | |
 | William Benjamin Carpenter - 1841 - 316 Seiten
...contrary proceeding. Harvests of wheat and tobacco were obtained for a century from one and the same field without the aid of manure ; but now whole districts are converted into unfruitful pasture-land, which, without manure, produces neither wheat nor tobacco. From every acre of this land... | |
 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1842 - 450 Seiten
...have elapsed without any alkalies having been extracted from the soil, a new harvest may be expected. produces neither wheat nor tobacco. From every acre of this land there were removed in the space of one hundred years 13,200 Ibs. of alkalies in leaves, grain, and straw ; it became unfruitful, therefore,... | |
 | Justus Freiherr von Liebig, Lyon Playfair Baron Playfair - 1842 - 450 Seiten
...mentioned above ; harvests of wheat and tobacco were obtained for a century from one and the same field, without the aid of manure ; but now whole districts are converted into unfruitful pasture-land, which without manure produces neither wheat nor tobacco. From every acre of this land... | |
 | 1843 - 770 Seiten
...mentioned above; harvests of wheat and tobacco were obtained for a century from one and the same field without the aid of manure, but now whole districts...acre of this land, there were removed in the space of one hundred years 1200lbs. of alkalies in leaves, grain, and straw; it became unfruitful therefore,... | |
 | Daniel Kimball Whitaker, Milton Clapp, William Gilmore Simms, James Henley Thornwell - 1843 - 570 Seiten
...above ; harvests of wheat and tobacco were obtained for a century from one and the same field without manure, but now whole districts are converted into...acre of this land there were removed, in the space of one hundred years, 1,200 Ibs. of alkalis in leaves, grain, and straw ; it became unfruitful therefore,... | |
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