There appears, then, in this supply of food, .59 lbs. oil and 4.36 lbs. starch for the production of .75 in the butter from 13 quarts per day, the cow’s greatest yield. At the time the milk was tested, aftermath hay was substituted for first-crop hay, in equal quantity. This, it will be observed, is decidedly richer in oil. Her produce had lessened to 10 quarts per day; her production of butter was 10.50 oz. per day, or of pure oil about 9 oz.; for the supply of oil the aftermath hay alone would be much more than adequate. On examining the adequacy of the food for the supply of albumen for the caseine, lbs. I find this to be, 3.08 I assume that in 120 lbs. of turnips, as required for maintenance, in a normal state, 1.98 ---- 1.10 Which, according to Haidlen’s analysis, will be adequate to the supply of 8.60 quarts per day. The supply of mineral substances is in excess. The cow, under this treatment, gave, Soon after calving, fully 13 quarts per day. Five weeks after calving, 11¹⁄₄ “ “ “ In less than 8 weeks after calving, 9 “ “ “ And with this there occurred also a loss of weight. We find this cow supplied with food amply rich in every element suited to her wants and purposes, with the exception of the nitrogenous principle only, lowering her condition, and likewise her yield of milk, till it approaches a quantity for which her food enables her to supply a due proportion of caseine. About the 20th of April, the cow’s yield being reduced to 9 quarts per day, her food was changed to steamed mixture. Soon after this her yield increased to 11 quarts per day. Her weight, April 28th, 9 cwt.; May 16th, 9 cwt. 14 lbs. yield of milk, 11 quarts. I now introduce the dairy statistics of Mr. Alcock, of Aireville, Skipton, who has for some time been practising my method of treatment, with such modifications as are suited to his circumstances. During the winter season, Mr. Alcock’s food consisted of mangold, of which he gave 20 lbs. per day to each, uncooked, together with steamed food _ad libitum_, consisting of wheat and bean straw, and shells of oats. Carob bean and Indian meal, for each, 3 lbs. per day Bran and malt-combs, 1 “ “ “ Bean-meal, 3¹⁄₂ “ “ “ Rape-cake,[5] 3 “ “ “ ------ Of extra food, 11¹⁄₄ [5] The rape-cake used by Mr. Alcock was of foreign manufacture, evidently rich in oil, but containing mustard, and on this account supplied in less proportion.