common disorder of the thyroid gland; though not very serious in minor cases, it is capable of becoming very dangerous, assuming such malignant forms as exophthalmic goiter, which is marked by palpitation of the heart, nervous symptoms and protrusion of the eyes.

It is thought by some authorities that the thyroid gland has to do with the control of the excretion of the waste products from nitrogenous foods, for it has been found that a meat diet or a high-proteid diet is extremely harmful in disorders of this organ. It has been found that dogs fed on meat after the thyroid gland has been removed invariably die in a few days, but that they can be kept alive for a long time if fed on a diet very low in proteids. It is found as a rule that those suffering from thyroid troubles do very well on a milk diet.

Some students of the subject conclude that the function of the thyroid gland is to destroy poisonous products formed by the decomposition of proteid food substances. It is believed by others that it also has a defensive action against other poisons in the body, including alcohol and poisonous drugs. In other words, it is thought to have an "antitoxic" action. It has also been held that this organ has much to do with the supply of iodine in the system, being particularly affected by the lack of iodine in the food. Again, it is said that when the thyroid gland has degenerated there ensues a condition of auto- intoxication, followed by a degeneration of other organs which destroy and eliminate poisons in the blood. It is claimed that in many cases of thyroid deficiency, as in cretinism, good results have been obtained by the use of thyroid extract, thus supplying the body with the secretion which normally should have been obtained from this gland.

But, whatever may be the function of this remarkable little organ, the fact remains that it is of tremendous importance to health, being undeniably endowed with extraordinary influence on virility, physical strength and mental vigor.

Now these facts were in mind when I commenced the experiments which, as I have said, led to the discovery of a method of stimulating the vital forces of the body. The problem seemed simple in some respects. If the thyroid gland has such a definite effect upon bodily health, the query as to how it can be strengthened and stimulated to perform its work more satisfactorily, assumed unusual importance and I was strongly moved to discover the answer. The problem, however, was not by any means an easy one. A long time elapsed before a satisfactory solution presented itself. The first thought that naturally occurs to one when endeavoring to stimulate the activities of any part of the body is to find some means of increasing the circulation to that part. Ordinary massage will usually accomplish this purpose to a limited degree, though massage to my mind is a superficial agent in many cases. It will increase local circulation, but it does not facilitate tissue changes to the same extent as exercise which directly affects the structures concerned, or the mechanical movements of the parts themselves that are brought about through active use of them in some way. I have known of cases in which pressure and massage applied to the region of the thyroid gland have been followed by harmful effects, such as fainting, and certainly no one with a weak heart should attempt to stimulate this organ in this manner. Therefore, in endeavoring to find a satisfactory means of stimulating this important gland, I did not give massage serious thought. And I might as well say that I finally "stumbled" upon the important truth which is the basis of the method that I am presenting.

For many years I have been a student of vocal culture, having taken up the study of this art chiefly as a recreation, with no thought of ever publicly using any ability I might acquire, though I might mention that the additional vocal strength obtained as a result of this training assisted me greatly in public speaking. While giving my attention to this particular study, I was greatly impressed by the extreme importance of maintaining an erect spine, holding the chin down, inward and backward, and keeping the shoulders back and the chest expanded. I found, however, like many others who become "slack" in bodily posture, that a considerable effort was required to maintain a proper position at all times. I therefore began a series of special exercises intended really to force myself to assume a properly erect position. While experimenting with these exercises for the purpose mentioned, I noted a marked effect upon my general vital vigor. Not only was this made apparent by an increase in physical strength and stamina, but it was marked in an equal degree by additional mental energy and capacity. My mind was clearer, and I could surmount difficulties presented in business enterprises in which I was interested with far more ease than before. I could make decisions more easily and quickly. In addition, a decided gain in weight was noted-not by any

means in the form of mere fatty tissue, but of firm, substantial flesh. These very pleasing results induced me to go more carefully into the causes underlying this remarkable improvement. I carried on an elaborate series of careful experiments with a view to proving the conclusions to which I had come in the course of these exercises. It was quite apparent that a full development of the back part of the upper spine was necessary in order to maintain the strength essential to extreme vigor and vitality. And it became quite plain to me that this development could not be achieved without stimulating to an unusual degree the thyroid gland. Reasoning along this line, I called to mind the appearance of various animals noted for their great strength and there I found my conclusions verified with remarkable emphasis. The arched neck of the stallion, the huge development of the back of the neck of the domestic bull, the same character in even more pronounced form in the case of the bull buffalo and the musk-ox, and in varying degrees in other animals conspicuous for their vitality and energy-all this seemed to indicate that I was on the verge of a remarkable discovery. When you think of a fiery steed, in every instance you bring to mind the arched appearance of the neck. The tight reins that are sometimes used to give a horse a pleasing appearance, are based upon the same ideal, showing a more or less subconscious recognition of the idea that this particular development is associated with tremendous animal vigor.

After giving consideration to various methods that could be used for the purpose of stimulating this little organ, the thyroid gland, I finally concluded as the result of prolonged experimentation that the exercises illustrated in this chapter can most thoroughly be depended upon for producing results. All movements here described have proved effective in imparting to the neck a full, arched, well developed appearance, but I have given especial attention to the active use of the muscles on the back of the neck. Nearly every movement which to a certain extent develops these muscles is inclined to stimulate the thyroid gland. The more special movements for this purpose are indicated in the various illustrations accompanying this chapter. This development of the back of the neck always indicates great vitality, because definite proof is thereby given that the spine is unusually strong and is maintained in a position favorable to the functioning of all the organs of the body. Many of the movements illustrated are but slight in character, but they are the more adaptable because of this. No matter where you may be, whether walking along the street,