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Read in the Section on Hygiene of American Medical Association, May, 1884.
Molescott's dictum is suggestive, "Without phosphorus there is no thought;" so without nutrition there is no life.
Life may be defined as an aggregation of molecules possessing the properties of respiration, circulation culation and nutrition. Each of these properties being necessary to all forms of life, the perfection of that life relies upon the completeness of the conditions such these properties depend. Either of these properties being imperfect or vitiated, the perfection of the organization is impaired, and the life jeopardized.
Pure air in abundance must be supplied. A perfect circulatory system to convey the pabulum to the remotest atom of the organization, and a fluid bearing on its bosom nutritive material suited to the wants of the most delicate tissues is a uniform necessity to health and vigor. From the food the blood is fed, and from