The Gastric Laboratory Uses Its

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As Was To Be Expected, The Discovery Of The Nervous Apparatus Of The Salivary Glands Immediately Impelled Physiologists To Seek A Similar Apparatus In Other Glands Lying Deeper In The Digestive Canal.

When The Dog Is Repeatedly Teased With The Sight Of Objects Inducing Salivary Secretion From A Distance, The Reaction Of The Salivary Glands Grows Weaker And Weaker And Finally Drops To Zero.

But Man Has Still Another Powerful Resource: Natural Science With Its Strictly Objective Methods.

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.