The Department publishes three bulletins which cover the subject:—Cultivation of Mushrooms, No. 204; Food Use of Mushrooms, No. 279; and Growing Mushrooms for Home Use, No. a233. Some mushroom farmers near Wawa, Delaware, according to a report in the Philadelphia _North American_, are clearing from $2000 to $3000 a year from four or five acres. Asparagus, celery and many other garden crops lend themselves readily to special cultivation and yield a good profit. So also do onions and even potatoes. One man at least claimed to have produced as many as 3000 bushels of potatoes from one acre in one year. He published a pamphlet setting out his method, but it is now out of print. So big a yield entails too much labor for the average grower, but a third of that number of bushels would yield a handsome income. But, ordinarily, it does not pay to raise potatoes in a small garden. Mr. C. E. Ford, who lived in Cherokee County, northeastern Texas, tells of raising two such incredible crops of potatoes annually from his land, and his method seems simple as set out by Finney Sprague of Chicago in a small book which was published in 1905. Mr. Ford had a sandy soil with a clay subsoil three feet below the surface, which he says he ridged up into dykes; then he used immense quantities of cotton-seed for fertilizer as well as liquid manure. One of the important features was his rich fertilizing, and though it sounds expensive when compared with the ordinary quantities of manure used, it is really cheap if anything like such results can be had. Commercial fertilizers suited to potato growing may be used in place of cotton-seed, and the grower claims that the method may be followed from Canada to Texas successfully, securing at least two crops of potatoes a season. According to his method, the seed used must be of uniform size, running about 80 potatoes to the bushel, and averaging about ¾ of a pound each in weight, smooth and bright. Half of such a potato is used to each hill, or if the potatoes weigh only six ounces, a whole potato is allowed for each hill. For intensive cultivation the potato must be sprouted before planting and for this purpose you need a “sprouting room.” Any room, say 10 × 12 × 7 feet, if warm, dry, double-walled and lighted will serve the purpose; or you can construct such a house with sawdust filling between the double walls and double ceiling, having two windows, and a roof over all: an old ice house would do.