Tests were made with all food substances palatable to Mr. V. and during all stages of gastric tonus and contractions, which imply all degrees of hunger and appetite. But most of the experiments were made with meats in the form of stews, fricassees, or pot roasts, fried eggs, and crackers or bread soaked in milk, soups, or meat gravy. The results are uniform without exception. Chewing or tasting palatable foods inhibits the tonus and the movements of the empty stomach. The inhibition is in evidence within a few seconds after placing the food in the mouth, and may or may not continue for some time after removing the food from the mouth and rinsing the mouth with warm water. The inhibition is least in evidence during the hunger tetanus. In fact, we are uncertain whether the chewing of palatable foods is able materially to affect the stomach in hunger tetanus. It is difficult to determine whether cessation of the hunger tetanus that follows-usually not very promptly-the placing of palatable food in the mouth is a "spontaneous" cessation, or due to inhibition from the mouth. The records show, however, that so far as the stimuli in the mouth affect the processes of the hunger tetanus, the influence is in the direction of inhibition.
The inhibition of the motor activity of the stomach by chewing palatable foods does not appear to have any after-effects in the nature of increased tonus or contractions. Some of the tracings do suggest a motor after-effect, but we are inclined to interpret them in a different way. These effects are obtained only when the tests are made during the relative quiescence of the stomach or at the beginning of a contraction period ("30-seconds rhythm"). Moreover, these results were not always secured even during these periods. It would therefore seem that these apparent augmentary after-effects represent the "spontaneous" initiation of a contraction period, or the gradual increase in the magnitude of the contractions characteristic of the periods of the 30-seconds rhythm.