Fish

The meat of fish is the animal food next in importance to that of birds and mammals. Fish meat, with but few exceptions, is less stimulating and nourishing than meat of other animals, but is usually easier of digestion. Salmon, mackerel, and eels are exceptions to these rules, and should not be eaten by those of weak digestion. White-blooded fish, on account of their easy digestibility, are especially desirable for those of sedentary habits. Fish is not recommended for brain-workers on account of the large amount of phosphorus (an element abounding largely in nerve tissue) which it contains, but because of its easy digestibility. It is a conceded fact that many fish contain less of this element than meat.