I have tried milk and soups upon a stomach trained down so fine that it was like a pair of apothecary's balances, sensitive to the least inharmony, to find that if they are drunk there is a mild protest—a sort of a shrug of the shoulders, as it were—and that when the same liquids have been moved about in the mouth for the time necessary to naturally excite the Swallowing Impulse, they have passed into the stomach without the owner being conscious afterwards of their presence except by feeling of complete satisfaction.

It would seem, therefore, that the perfection of nutrition requires the proper mixture of saliva added to all food substances, and that mastication is not only a means of separation in order to give saliva a chance but a valve opener for salivary glands in order to make the proper solution for the stomach; and, that taste exists, in one of its important functions, to indicate how long the process should continue and when it has effected its healthful purpose.

Any one who tries it, no matter how perverted the taste has become by abuse, will find that Nature is not only kind but alluring. Meat or bread, without sauces or butter, are tasteless, in a degree, when first taken into the mouth dry. It is for this reason that butter, sauces, salt, sugar, etc., are used to make them what is called palatable. It is the salt or the sugar or other spices in these which excites the palate immediately when the dry morsel would not do so in such marked degree.

If you take the meat or the dry bread and masticate sufficiently, allowing the nutriment to become thoroughly solved by the saliva and separated from the dirt,—the indigestible, tasteless remainder—the taste will become more and more delicious as the saliva gets possession of the solution, and will have a final delicacy which sauces cannot equal, as a reward for pursuing Nature's invitation and rendering her the appointed service.

An easy experiment that will prove the above statement to be correct is to take a variety of breads, white and brown, toasted and untoasted, crust and soft, and afterwards some of the same soaked in soup or milk, or, in the juice of whatever meat you happen to have at your meal.

Taken dry, toast will only reduce and disappear, without effort of swallowing, into the stomach, leaving no tasteless dregs behind, after about thirty actions of the jaw. This is probably the reason why toast is an invalid's best diet; because mastication is required to crush it, saliva is liberated by the acts of mastication, less saliva is required to prepare toast for the stomach than any other form of bread, and therefore, the proper conditions are attained perforce, and easy digestion is promoted. Crust of French bread will do the same by means of about forty jets let loose by mastication; the soft inside of French bread will require fifty, or more; crust and inside of biscuits and of "home-made" bread somewhat more than the French bread; while "Boston brown bread" requires as many as seventy to eighty jets turned on by action of mastication to dissolve it.

The above refers to moderate mouthfuls. The process is incomplete until all is dissolved, taste ceases, and natural swallowing occurs.

Will it not be observed that mastication, as far as crushing or mangling is concerned, has small part in the reduction of "Boston brown bread," and little seeming use except to turn on the jets of the solving saliva, for the material itself is soft, and sometimes "mushy"? Saliva has little use as a lubricant in this case, for the reason that the brown bread experimented with can be easily swallowed when first taken in the mouth. Abundant experiment has been made by those to whom "Boston brown bread" was formerly little less than a poison, to prove the assertion that, sufficiently mixed with saliva, it is perfectly digestible and that the delicious taste of the bread after forty or fifty bites (⅓ to ½ minute) gets sweeter and sweeter, and attains its greatest sweetness and most delicate taste at the very last, when it has dissolved into liquid form and most of it has escaped into the stomach.

It will be noticed that the time, or attention, required to solve these different problems of nutrition as embodied in different sorts of breads is exactly proportionate to their recognised digestibility, and explains the reason why hot and "soggy" biscuits, after the American fashion, and "Boston brown bread" have been classed as not easily digestible.