Edible substances evoke the secretion of thick, concentrated saliva. Why? The answer, obviously, is that this enables the mass of food to pass smoothly through the tube leading from the mouth into the stomach.

But man has still another powerful resource: natural science with its strictly objective methods.

Finally, as the digestive canal is a complex system, a series of separate chemical laboratories, I cut the connections between them in order to investigate the…

At the same time this is an extremely important practical application of the power of human knowledge, which may also be of immediate use to man, who, due to t…

As we have seen, bread, and especially dry bread, evokes secretion of considerably larger quantities of saliva than meat.

With each meal, when edible substances find their way into the oral cavity, thick and viscous saliva containing much mucus flows out of these glands.

The jaws' hooked clamp and fangs Not to be changed at this date; A life subdued to its instrument.