“The dogs were suspended in a sort of harness. They had had their throats fixed so that food instead of going into the stomach came out at the throat. So as the dog ate the food, the food fell back into the plate and the dog continued eating the same breakfast over and over. These dogs had been eating the same breakfast for four hours, from six to ten o’clock in the morning, and they were still eating, and just as hungry as ever because there was no food entering their stomachs at all and their appetites were growing keener every moment, and they were having a wonderfully good time. I thought that some people I have met might enjoy such an arrangement. This really has the same effect without having your throat cut. “I noticed that if these dogs got disgruntled, or tired, or dissatisfied, then the gastric juice would cease to flow. Sometimes the food, having been chewed a very long time, lost its flavor, and the dogs secreted no more juice; then the attendant would come along and put a little fresh food into the plate and the dogs would seize this with great avidity, and the gastric juice would begin to flow again in a perfect stream. “These experiments have demonstrated in the most positive manner the definite connection there is between psychic conditions and the process of digestion, and have shown us that the food must be palatable, that it must address the olfactory sense agreeably, and that the mind must be in a happy state in order that the digestive process may proceed.” And then Dr. Kellogg goes on to tell of the work of Professor Cannon, of Harvard University, who actually has made visible the digestive processes in the stomach by means of the X-ray. By feeding cats food colored with certain substances which are impervious to the X-rays, he was enabled to photograph all the actual movements of the organs concerned in the acts of digestion. It was demonstrated that certain emotions, such as anger and fear, positively stopped the whole process of digestion. Depressing thought will affect injuriously the circulation of the blood; it will also affect the breathing. The mere attitude of the body assumed by the despondent person has its bad influence. The head droops in a melancholy fashion—and this very attitude prevents normal action of the lungs and the blood veins. Depressing thoughts destroy the appetite; and when the body does not receive its proper nourishment, the blood becomes impoverished.