The tobacco industry was a culture that required much labor. In the spring a pile of brush was burned and on the spot thus fertilized and made friable the seed were sowed. In due course the ground was prepared and the young plants were transplanted into rows. Later they must be repeatedly plowed, hoed and otherwise cultivated and looked after and finally the leaves must be cut or gathered and carried to the dry house to be dried. One man could care for only two or three acres, hence large scale cultivation required many hands--result, the importation of vast numbers of indentured servants and black slaves, with the blighting effects always consequent upon the presence of a servile class in a community. [Illustration: _By permission of the Mount Vernon Ladies' Association_ The Mount Vernon Kitchen (restored)] Although tobacco was the great staple, some of the Virginia planters had begun before the Revolution to raise considerable crops of wheat, and most of them from the beginning cultivated Indian corn. From the wheat they made flour and bread for themselves, and with the corn they fed their hogs and horses and from it also made meal for the use of their slaves. In the culture of neither crop were they much advanced beyond the Egyptians of the times of the Pyramids. The wheat was reaped with sickles or cradles and either flailed out or else trampled out by cattle and horses, usually on a dirt floor in the open air. Washington estimated in 1791 that the average crop of wheat amounted to only eight or ten bushels per acre, and the yield of corn was also poor. So much emphasis was laid upon tobacco that many planters failed to produce food enough. Some raised none at all, with the result that often both men and animals were poorly fed, and at best the cost of food and forage exhausted most of the profits. A somewhat similar condition exists in the South to-day with regard to cotton. Almost no attention was paid to conserving the soil by rotation of crops, and even those few planters who attempted anything of the sort followed the old plan of allowing fields to lie in a naked fallow and to grow up in noxious weeds instead of raising a cover crop such as clover. Washington wrote in 1782: "My countrymen are too much used to corn blades and corn shucks; and have too little knowledge of the profit of grass land." And again in 1787: