Fruits are best left alone in winter. They are generally acid, and the system is better without very acid foods in the cold weather. But fruits are health-giving foods in warm and hot weather, and living under natural, primitive conditions, this is the only time of the year we should have them, for Nature only provides fruit during the months of summer. The fraction of protein fruit contains, 1 per cent. or less, is too small to be of any account. The nutritive value of fruits consists in their mineral salts, grape-sugar and water. Much the same applies to green vegetables. In cooking vegetables care should be taken that the water they are cooked in is not thrown away as it contains nearly all the nutrient properties of the vegetable; that is to say, the various salts in the vegetable become dissolved in the water they are boiled in. This water can be used for soup if desired, or evaporated, and with flour added to thicken, served as sauce to the vegetable. Potatoes are a salutary food, especially in winter. They contain alkalies which help to lessen the accumulation of uric acid. They should be cooked with skins on: 16 grains per lb. more of valuable potash salts are thus obtained than when peeled and boiled in the ordinary way. The ideal method, however, of taking most vegetables is in the form of uncooked salads, for in these the health-giving, vitalising elements remain unaltered. If man is to be regarded, as many scientists regard him, as a frugivore, constitutionally adapted and suited to a nut-fruit diet, then to regain our lost original taste and acquire a liking for such simple foods should be our aim. It may be difficult, if not impossible, to make a sudden change after having lived for many years upon the complex concoctions of the chef's art, for the system resents sudden changes, but with proper care, changing discreetly, one can generally attain a desired end, especially when it involves the replacing of a bad habit by a good one.