=The wheat problem.=--Meanwhile, we must consider briefly the question evidently raised by this fact of human multiplication. As an expert has lately said, the rise in the price of wheat “is not the transitory result of market manipulation and ‘corners,’ forcing prices up to an unnatural level, but of perfectly natural and irresistible causes which, for all that, are the more anxious and disquieting. The truth is we are for the first time beginning to feel individually the effect of a great natural process--the race which started long ago between the population of the world and the growth of the world's wheat supply. In this race the growth of the world's population has been outstripping the growth of its wheat-food production, and the consequence has been a total growing shortage, in spite of the opening of vast new areas in Canada and the Argentina.” In this connection one of the best papers in Great Britain--the _Westminster Gazette_--cheerfully remarked in a leading article that, after all, we need not be alarmed as to the difficulty in increasing the supply of wheat, since population would, in any case, adapt itself to the food-supply. This is true, indeed: there will never be more human beings than there is food to feed. But the question is, how will the population be kept down? In a word, is it to be by the awful and bloody processes of Nature or by the conscious, provident and humane methods of man? We are reminded of the argument advanced by Sir William Crookes in his Presidential Address to the British Association in 1898. The distinguished author has himself written an invaluable book on the subject which has been carefully revised and supplemented, and must be read by the serious student.[21] We may note from the point of view of the student of dietetics that wheat is and remains, on physiological examination, what the proverb suggests. Bread is the staff of life, wheat being, in proportion to its price, by far the best and cheapest of all foods.