Amazon.com description: Product Description: "[...]expects farming to be pleasant and profitable, and things to move aright, unless his land is strong and fat? Is he perfectly sane when he thinks he can skin his farm year after year, and not finally come to the bone? The farmer on exhausted land must of necessity use manure. Manure of some kind must go under, or he must go under; and to the great mass of cultivators no mode of enriching is so feasible, so cheap, and attended with such satisfactory results, as that of plowing under green crops. The old plan of leaving an exhausted farm, and going West in search of[...]".