One of the most important features of the estate was its fishery, for the catch, salted down, largely served in place of meat for the negroes’ food. Of this advantage Washington wrote, “This river,… is well supplied with various kinds of fish at all seasons of the year; and, in the spring, with the greatest profusion of shad, herrings, bass, carp, perch, sturgeon, &c. Several valuable fisheries appertain to the estate; the whole shore, in short, is one entire fishery.” Whenever there was a run of fish, the seine was drawn, chiefly for herring and shad, and in good years this not merely amply supplied the home requirements, but allowed of sales; four or five shillings the thousand for herring and ten shillings the hundred for shad were the average prices, and sales of as high as eighty-five thousand herring were made in a single year. In 1795, when the United States passed an excise law, distilling became particularly profitable, and a still was set up on the plantation. In this whiskey was made from “Rye chiefly and Indian corn in a certain proportion,” and this not merely used much of the estate’s product of those two grains, but quantities were purchased from elsewhere. In 1798 the profit from the distillery was three hundred and forty-four pounds twelve shillings and seven and three-quarter pence, with a stock carried over of seven hundred and fifty-five and one-quarter gallons; but this was the most successful year. Cider, too, was made in large quantities. A stud stable was from an early time maintained, and the Virginia papers regularly advertised that the stud horse “Samson,” “Magnolia,” “Leonidas,” “Traveller,” or whatever the reigning stallion of the moment might be, would “cover” mares at Mount Vernon, with pasturage and a guarantee of foal, if their owners so elected. During the Revolution Washington bought twenty-seven of the army mares that had been “worn-down so as to render it beneficial to the public to have them sold,” not even objecting to those “low in flesh or even crippled,” because “I have many large Farms and am improving a good deal of Land into Meadow and Pasture, which cannot fail of being profited by a number of Brood Mares.” In addition to the stud, there were, in 1793, fifty-four draught horses on the estate.