From some experiments detailed in a paper read before the Académie Française in 1848, he concluded that the liver was capable of actually producing sugar and fat out of Proteine compounds. For he found sugar to exist in the substance of the liver when none was to be detected in the blood of the Portal vein which proceeds to it. His results have been mainly confirmed by M. Lehmann. M. Bernard states further, that the action of the liver is in some way essential to the assimilation of saccharine matters; for he has found that when sugar is injected into the veins beyond the liver, it passes out unaltered in the urine. Thus the process of assimilation, whether of albuminous or of saccharine matters, is not so easy and so simple a thing as might at first be imagined. The study of this process is of great importance; and it appears to afford us a clue to the causation of certain disorders of the blood, of which I shall have to speak hereafter. Upon the regulation of diet, one of the most important of the duties that devolve upon the medical man, it is not my purpose to make more than a few observations. All kinds of food are less required by the system in inflammatory and febrile disorders; and should then be administered sparingly, or wholly denied, according to the severity of the case. But in Typhus fever long abstinence would be dangerous; the patient is in peril from extreme weakness and inanition, and, being often totally unconscious of his natural wants, requires to be carefully sustained by constant and small increments of animal and farinaceous food. Water may be given largely whenever we wish to increase the amount of any of the fluid secretions; as the urine, to render less likely the deposition of gravel; or the perspiration, when it is desirable to promote it in fevers or other disorders. Albuminous food is always necessary in health, and is contained not only in the flesh of animals, but in vegetable substances in their natural condition. It is recommended to restrict it in the management of gouty or plethoric patients. On the other hand, animal is more easily digested than vegetable food in many cases of dyspepsia. In Diabetes mellitus, when a large quantity of sugar is excreted in the urine, it is a common practice to confine the patient to a diet of meat and gluten bread. This latter is a tough horny material, prepared from flour from which the starch has been separated by washing. It is thought that if no starch be given, no sugar can be formed; but it is found that, though both the amount of urine and the quantity of sugar in it are diminished by this plan, yet the latter does not wholly disappear. This may be easily accounted for, if we admit that sugar may be formed from albumen. Water should be given sparingly in this disease; for the more a patient drinks, the more urine he passes, and all of the same high specific gravity.