Young and Sir John Sinclair were by no means his only agricultural correspondents. Even Noah Webster dropped his legal and philological work long enough in 1790 to propound a theory so startlingly modern in its viewpoint that it is worthy of reproduction. Said he: "While therefore I allow, in its full extent, the value of stable manure, marl, plaster of Paris, lime, ashes, sea-weed, sea-shells & salt, in enriching land, I believe none of them are absolutely necessary, but that nature has provided an inexhaustible store of manure, which is equally accessible to the rich and the poor, & which may be collected & applied to land with very little labor and expense. This store is the _atmosphere_, & the process by which the fertilizing substance may be obtained is vegetation." He added that such crops as oats, peas, beans and buckwheat should be raised and plowed under to rot and that land should never be left bare. As one peruses the letter he recalls that scientists of to-day tell us that the air is largely made up of nitrogen, that plants are able to "fix it," and he half expects to find Webster advocating "soil innoculation" and speaking of "nodules" and "bacteria." Throughout the period after the Revolution our Farmer's one greatest concern was to conserve and restore his land. When looking for a new manager he once wrote that the man must be, "above all, Midas like, one who can convert everything he touches into manure, as the first transmutation toward gold; in a word, one who can bring worn-out and gullied lands into good tilth in the shortest time." He saved manure as if it were already so much gold and hoped with its use and with judicious rotation of crops to accomplish his object. "Unless some such practice as this prevails," he wrote in 1794, "my fields will be growing worse and worse every year, until the Crops will not defray the expense of the culture of them." He drew up elaborate plans for the rotation of crops on his different farms. Not content with one plan, he often drew up several alternatives; calculated the probable financial returns from each, allowing for the cost of seed, cultivation and other expenses, and commented upon the respective advantages from every point of view of the various plans. The labor involved in such work was very great, but Washington was no shirker. He was always up before sunrise, both in winter and summer, and seems to have been so constituted that he was most contented when he had something to do. Perhaps if he had had to engage in hard manual toil every day he would have had less inclination for such employment, but he worked with his own hands only intermittently, devoting his time mostly to planning and oversight. One such plan for Dogue Run Farm is given on the next page. To understand it the reader should bear in mind that the farm contained five hundred twenty-five arable acres divided into seven fields, each of which contained about seventy-five acres.