Some valuable investigations were made on the diet of a family of fruitarians, at the Californian Agricultural Experimental Station, July, 1900, by Professor M.E. Jaffa (bulletin 107). The proportion of food, both proteid and carbo-hydrate used was surprisingly small. The research is particularly important, as the diet was not an experimental one, tried during a short period only; but that to which the family were accustomed. The family consisted of two women and three children; they had all been fruitarians for five to seven years, and made no change in their dietary during the experiment. They only had two meals a day, the food being eaten uncooked. The quantities of all the foods and other particulars are detailed in the bulletin. The first meal was at 10-30 a.m., and always consisted of nuts followed by fruits. The other meal was about 5 p.m., when they usually ate no nuts, substituting olive oil and honey. The nuts used were almonds, Brazil, pine, pignolias and walnuts; the fresh fruits were apples, apricots, bananas, figs, grapes, oranges, peaches and pears. Other foods were dates, raisins, pickled olives, olive oil and honey. One person (_b_) ate a little celery and tomatoes, and another (_c_) a little cereal food. In the following table are given the average daily quantities of the food constituents in grammes:--Proteids, fat, carbo-hydrate, crude fibre, value in calories and nutrient ratio. The crude fibre is classed as a carbo-hydrate and included in the calorie value, and also in calculating the nutrient ratio. Pro. Fat. C'r'b. Fibre. Cal. N. R. Woman, age 33, weight 90 lbs. (_a_) 33 59 110 40 1300 8.6 Woman " 30 " 104 " (_b_) 25 57 72 27 1040 9.1 Girl " 13 " 75-1/2 " (_c_) 26 52 111 46 1235 10.5 Boy " 9 " 43 " (_d_) 27 56 102 50 1255 10.3 Girl " 6 " 30-1/2 " (_e_) 24 58 97 37 1190 11.1 Girl " 7 " 34 " (_ee_) 40 72 126 8 1385 7.4 The last research extended over ten days; the period during which each of the other subjects was under observation was from 20 to 28 days.