Food, then, composed of animal and vegetable substances, seems to be the best adapted for our organs of mastication and digestion, though it would not be easy to say precisely what proportions of these are most agreeable to the intentions of nature. We may safely conclude, however, that the vegetable food ought to exceed the animal in quantity. The direction given by Dr. Fothergill is the most judicious we have met with. “I have only” says he “one short caution to give. Those who think it necessary to pay any attention to their health at table, should take care that the quantity of bread, of meat, of pudding, and of greens, should not compose each of them a meal, as if some were only thrown in to make weight; but they should carefully observe, that the sum of all together do not exceed due bounds, or encroach upon the first feeling of satiety.” OBSERVATIONS ON THE VARIOUS KINDS OF ANIMAL SUBSTANCES COMMONLY USED FOR FOOD. Of the different classes of animals used for food, quadrupeds compose the greatest proportion, and there is no part of their bodies which does not contain nutritive parts, and that has not been used as food in some way or other. Even bones affords an alimentary jelly fit for human food. The largest portion of our aliment, however, is derived from the voluntary muscles of animals, or what is more strictly called, the flesh, consisting of all the red fibrous substance which covers the bones. It should seem that this is both the most nourishing and the most easily digested of animal substances. The red colour arises from the blood of minute vessels which run in every direction among the fibres; but whether this is the cause of the red muscle being more nutritious is not well ascertained. Thence the flesh of quadrupeds is more largely consumed than of any other class of animals; and, indeed, those in common use in most parts of Europe possesses all the alimentary properties in the highest perfection. All animal flesh seems more or less stimulating; and, in general, the more so the darker its colour is--but it does not absolutely follow that it is also more nutritious.