cial food digestor, instead of seeking out the causes of the disorder and endeavoring to remove the same. The natural digestive fluids are the products of vital activity in living structures. The salivary glands, the gastric tubules, the pancreatic and hepatic cells and the structures in which they are imbedded, are all endowed with vital properties, and the digestive and assimilative processes are vitalizing and not merely chemic changes. The chemist may mix any one or all the elements of food

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... with either artificial or natural digestive fluids in glass tubes or earthen vessels and he may effect their solution, but he would never produce either true chyle, lymph or blood, much less an organized structure. As well might he put an unimpregnated ovum into his incubator, and expect in due time to have a live chicken instead of a decayed and odorous mass within the shell. While it is im-