Feeding on the part of civilised man is not the simple procedure which it is with animals, although many animals are particular as to their food and what is called "dainty." The necessity for civilised man of cheerful company at his meal, and for the absence of mental anxiety, is universally recognised, as well as the importance of an inviting appeal to the appetite through the sense of smell and of sight, whilst the injurious effect of the reverse conditions, which may lead to nausea, and even vomiting, is admitted. Even the ceremonial features of the dinner table, the change of clothes before sitting down to the repast, the leisurely yet precise succession of approved and expected dishes, accompanied by pleasant talk and light-hearted companionship, are shown by strict scientific examination to be important aids to the healthy digestion of food, which need not be large in quantity, although it should be wisely presented. These psychical conditions of healthy feeding are not trivial matters, as we are too apt to suppose. They are part, and a very important part, of the physiology of nutrition, and so deserving of scientific inquiry and of practical attention. They have been made the subject of careful experiment by a Russian physiologist, Pavloff. At a recent meeting of the British Association this matter was brought under discussion in the Physiological Section, and it was pointed out by the author of a very interesting communication that the whole question as to what is and what is not a sound and healthy diet is too often dealt with by writers who ignore the psychical (or shall we say the cerebral?) factor. Cases were cited of dangerous arrest of the power of digesting, or even of swallowing, food which were cured by giving the patient some apparently inappropriate and probably harmful article of food for which he or she had a fancy, such as a grilled salmon-steak, the last thing which would be spontaneously recommended by a medical man to a patient who had been suffering for weeks from inability to take food. The willingness is all--the assent, the approval of the cerebral centres, and the consequent unlocking of the whole arrested mechanism of digestive secretions and movements. Such a case is only an extreme instance. But it is undoubtedly the fact that just as the sight of so small a thing as a drop of blood, or even the word "blood," will on occasion cause a strong, healthy man to faint, so quite a small excess or defect in the accustomed quality of food will at times arrest the appetite and digestive processes of a healthy man. To many a healthy individual one among many flavours and savours associated with agreeable food is necessary in order that healthy appetite and proper digestion may be set going, and the absence of the right flavour and the presence of what is, in his experience, a wrong and disgusting smell or taste in the food set before him, will produce nausea and complete arrest of the digestive processes.