expence will be considerably diminished by this change, the nett profit as
great and my attention less divided, whilst the fields will be improving."
That this was only an abandonment of a "one crop" system is shown by the
fact that in 1792 he grew over five thousand bushels of wheat, valued at
four shillings the bushel, and in 1799 he said, "as a farmer, wheat and
flour are my principal concerns." And though, in abandoning the growth of
tobacco, Washington also tried "to grow as little Indian corn as may be,"
yet in 1795 his crop was over sixteen hundred barrels, and the quantity
needed for his own negroes and stock is shown in a year when his crop
failed, which "obliged me to purchase upwards of eight hundred barrels of
corn."

In connection with this change of system, Washington became an early
convert to the rotation of crops, and drew up elaborate tables sometimes
covering periods of five years, so that the quantity of each crop should
not vary, yet by which his fields should have constant change. This system
naturally very much diversified the product of his estate, and flax, hay,
clover, buckwheat, turnips, and potatoes became large crops. The scale on
which this was done is shown by the facts that in one year he sowed
twenty-seven bushels of flaxseed and planted over three hundred bushels of
potatoes.

Early and late Washington preached to his overseers the value of
fertilization; in one case, when looking for a new overseer, he said the
man must be, "above all, Midas like, one who can convert everything he
touches into manure, as the first transmutation towards gold;--in a word
one who can bring worn out and gullied Lands into good tilth in the
shortest time." Equally emphatic was his urging of constant ploughing and
grubbing, and he even invented a deep soil plough, which he used till he
found a better one in the English Rotheran plough, which he promptly