Lean of mutton 17
Flesh of common fowl 16
Bacon 44
Gloucester cheese 49
Salted herrings 158

"In most seeds and fruits there is much phosphate in the mineral
matter, and in most green vegetables much potash. One important kind
of mineral matter alone is deficient in vegetable food, and that is
common salt."


FOOTNOTE:

[4] See Vegetables, Chap. VII.




CHAPTER III.

Nutrition.


It is not within the scope of this book to deal with the science of
nutrition; but a few general principles may be given which concern the
effect upon the system of the different classes of food. Animal food
requires a considerable quantity of oxygen for its complete
combustion. Meat in general has a more stimulating effect upon the
system and is more strengthening than vegetable food. There is,