DEAR SIR,--I should have taken time ere this to have considered the observations of Mr. Young, could I at this place have done it in such a way as would satisfy either him or myself. When I wrote the notes of the last year, I had never before thought of calculating what were the profits of a capital invested in Virginia agriculture. Yet that appeared to be what Mr. Young most desired. Lest therefore no other of those, whom you consulted for him, should attempt such a calculation, I did it; but being at such a distance from the country of which I wrote, and having been absent from that and from the subject in consideration many years, I could only, for my facts, recur to my own recollection, weakened by time and very different applications, and I had no means here of correcting my facts. I therefore hazarded the calculation rather as an essay of the mode of calculating the profits of a Virginia estate, than as an operation which was to be ultimately relied on. When I went last to Virginia I put the press-copy of those notes into the hands of the most skilful and successful farmer in the part of the country of which I wrote. He omitted to return them to me, which adds another impediment to my resuming the subject here; but indeed if I had them, I could only present the same facts, with some corrections and some justifications of the principles of calculation. This would not and ought not to satisfy Mr. Young. When I return home I shall have time and opportunity of answering Mr. Young's enquiries fully. I will first establish the facts as adapted to the present times, and not to those to which I was obliged to recur by recollection, and I will make the calculation on rigorous principles. The delay necessary for this will I hope be compensated by giving something which no endeavors on my part shall be wanting to make it worthy of confidence. In the meantime Mr. Young must not pronounce too hastily on the impossibility of an annual production of £750 worth of wheat coupled with a cattle product of £125. My object was to state the produce of a _good_ farm, under _good_ husbandry as practised in my part of the country. Manure does not enter into this, because we can buy an acre of new land cheaper than we can manure an old acre. Good husbandry with us consists in abandoning Indian corn and tobacco, tending small grain, some red clover, following, and endeavoring to have, while the lands are at rest, a spontaneous cover of white clover. I do not present this as a culture judicious in itself, but as _good_ in comparison with what most people there pursue. Mr. Young has never had an opportunity of seeing how slowly the fertility of the _original soil_ is exhausted. With moderate management of it, I can affirm that the James river lowgrounds with the cultivation of small grain, will never be exhausted: because we know that under that cultivation we must now and then take them down with Indian