CONTENTS INTRODUCTION: ATTITUDES TOWARD HUMAN NATURE I. HOW THE GLANDS OF INTERNAL SECRETION WERE DISCOVERED II.

It was Berthold's idea to test whether a gland with a definite external secretion, and a duct through which that secretion was expelled, but which yet had powers over the body as a whole that were to be attributed only to an internal secretion, could not be shown, by a clean-cut experiment, to possess such an internal secretion.

Listen: A pearl is nothing more or less than nacre, a fluid secretion of a certain variety of oysternot the eatable kind.

First, the great diversity of character exhibited by different sets of fissure veins which cut the same country rock seems incompatible with any theory of lateral secretion.

The amount of post-pituitary secretion reaches a certain concentration.

The amount of post-pituitary secretion reaches a certain concentration.

Now if we omit an estimate of the undigestible remains of the food, we find that the main bulk of what daily leaves the body consists of water, carbon dioxid, and certain solid matters contained in solution in the renal secretion and the sweat.

If this be not thoroughly done, the oily secretion holds the particles of waste substances to the surface of the body, while dust and dirt collect, and form a layer upon the skin.

Thyroid internal secretion has a very definite controlling relation to all of them: to skin, its hairiness, moisture and amount of mucus, to the growth and size of the bones, especially the bones of the extremities and the skull, and to intelligence and the complexity of the convolutions of the brain.

In dangerous situations we think more rapidly and keenly, for in emergencies the blood floods the brain with extra thyroid and adrenal secretions.

Pearl is, in fact, a calcareous secretion by the fish of bivalve shells; and principally by such as inhabit shells of foliated structure, as sea and fresh water muscles, oysters, &c. A pearl consists of carbonate of lime, in the form of nacre, and animal matter arranged in concentric layers around a nucleus; the solution indicating no trace of any phosphate of lime.

Changes occur in heart beat, breathing; various glandular secretions are affected, the digestive organs respond.

As they possess definite canals for the removal of their gross secretion, the specific reproductive cells, ova or spermatozoa, to a surface of the body, they are first of all glands of external secretion.

These are but a few of the observations obtained in experimental sub-pituitarism, that is, underaction or insufficient secretion of the pituitary, produced by removing part of the anterior gland.

Thrush is a disease of the follicles of the mucous membrane of the alimentary canal, whereby there are formed small vesicles, or bladders, filled with a thick mucous secretion, which, bursting, discharge their contents, and form minute ulcers in the centre of each vessel.

Normal secretion, oversecretion or undersecretion are thus adjusted, but leave a train of after effects.

That is why in women after the grand sex change of life, the menopause, hair often grows in the typically male regions because of loss of the inhibiting influence of the ovarian internal secretion upon them.

The gall, or peculiar secretion of the liver; a viscid, yellowish fluid, and very bitter to the taste.

Portions of this loose horn removed reveal beneath it a caseous foetid matter, easily removed by scraping (the perverted secretion of the keratogenous membrane).

The placental secretion plays a most important rôle as brake upon the post-pituitary, the most active of the feminizing uterus-disturbing endocrines.

They are believed by some to elaborate the specific internal secretion of the thymus.

This medicine is particularly serviceable in hysteric depressions proceeding from a cold cause, or obstruction of the uterine secretions, where other aromatics, even those of the more generous kind, have little effect.

Or if the cortical secretion pours in an overwhelming amount of its secretion from the first into the blood there will be no fear, but anger immediately.

That means a small and so potentially inadequate pituitary, both anterior and posterior, potentially inadequate in that it will become impossible for it to grow and produce extra secretion upon demand.

Then something more even than an abundant diet is required to keep the mind and body up to a standard sufficiently healthy to admit of a constant and nutritious secretion being performed without detriment to the physical integrity of the mother, or injury to the child who imbibes it; and as stimulants are inadmissible, if not positively injurious, the substitute required is to be found in malt liquor.