CHAPTER I.

INTRODUCTORY REMARKS.

Waste or loss of substance always attendant on action--In the vegetable and animal kingdoms waste is greater than in the physical--Living bodies are distinguished by possessing the power of repairing waste--Vegetables, being rooted in one place, are always in connection with their food--Animals, being obliged to wander, receive their food at intervals into a stomach--Nutrition most active when growth and waste are greatest--In vegetables the same causes which increase these processes also stimulate nutrition--But animals require a monitor to warn them when food is needed--The sense of Appetite answers this purpose--The possession of a stomach implies a sense of Appetite to regulate the supplies of food, 1–10