[45] In this volume is a letter written to Switzer, from his "ingenious friend Mr. Thomas Knowlton, Gardener to the Earl of Burlington, who, on account of his own industry, and the opportunity he has had of being educated under the late learned Dr. Sherrard, claims a very advanced place in the list of Botanists." This letter is dated Lansborough, July, 1728. I insert part of this letter:--"I hope, Sir, you will excuse the freedom I take in giving you my opinion, having always had a respect for your endeavours in Husbandry and Gardening, ever since you commenced an author. Your introduction to, and manner of handling those beloved subjects, (the sale of which I have endeavoured to promote) is in great esteem with me; being (as I think) the most useful of any that have been wrote on these useful subjects. If on any subject, you shall hereafter revise or write farther upon, any communication of mine will be useful or serviceable to you, I shall be very ready to do it. I heartily wish you success in whatever you undertake, as it tends to a publick good." Dr. Pulteney says of Knowlton, "His zeal for English Botany was uncommonly great, and recommended him successfully to the learned Botanists of this country. From Sir Hans Sloane, he received eminent civilities." [46] few short notices occur of names formerly eminent in gardening:--"My late ingenious and laborious friend, Mr. _Oram_, Nurseryman, of Brompton-lane." "That great virtuoso and encourager of gardening, Mr. Secretary Johnson, at Twickenham." "Their beautiful aspects in pots, (the nonpareil) and the middle of a desert, has been the glory of one of the most generous encouragers of gardening this age has produced, I mean the Right Honourable the Lord Castlemain." "The late noble and most publick spirited encourager of arts and sciences, especially gardening, his Grace the Duke of Montague, at Ditton." "The Elrouge Nectarine is also a native of our own, the name being the reverse of _Gourle_, a famous Nurseryman at Hogsden, in King Charles the Second's time, by whom it was raised." And speaking of the successful cultivation of vines in the open air, he refers to the garden of a Mr. _Rigaud_, near _Swallow-street_; and to another great cultivator of the vine, "of whose friendship I have proof, the Rev. Mr. _Only_, of _Cottesmore_, in Rutland, some time since deceased; one of the most curious lovers of gardening that this or any other age has produced." This gentleman, in 1765, published "An Account of the care taken in most civilized nations for the relief of the poor, more particularly in the time of scarcity and distress;" 4to. 1s. Davis. I believe the same gentleman also published, in 1765, a Treatise "Of the Price of Wheat."