412. When we expose ourselves to any poisonous vapors, or handle diseased animals or sick persons, safety and health require that the cuticle be not broken or otherwise injured. In many instances, the poisonous animal matter upon hides has been introduced into the systems of tanners, through small ulcers upon their fingers or hands. From these sores there would be seen small red lines extending up the arm. These swelled tracts indicate an inflammation of the large lymphatic trunks, that have been irritated and diseased by the passage of poisonous matter through them into the system. -=-=-=-=-=-=-=-=-=-=-=-= 410. Do the same results follow, if the cuticle is only punctured? Relate an instance of death by the absorption of poisonous matter. 411. By what means is the vaccine matter introduced into the system? 412. What caution is necessary when we expose ourselves to poisonous vapors? -=-=-=-=-=-=-=-=-=-=-=-= _Observation._ A distressing illustration of the absorption of deleterious substances from the surface of a sore, is seen in the favorite experiments of that class of "quacks," who style themselves "cancer doctors." With them, every trifling and temporary enlargement, or tumor, is a cancer. Their general remedy is arsenic; and happy is the unfortunate sufferer who escapes destruction in their hands, for too frequently their speedy cure is death. 413. In case of an accidental wound, it is best immediately to bathe the part thoroughly in pure water, and to avoid all irritating applications. In some instances, it would be well to apply _lunar caustic_ immediately. When handling or shrouding dead bodies, or removing the skin from animals that have died of disease, it would be well to lubricate the hands with olive-oil or lard. This affords protection to the minute portions of the skin, from which the cuticle may be removed. In all cases where there is an ulcer or sore, the part should be covered with something impervious to fluids, as court-plaster, before exposing the system to any animal, vegetable, or mineral poison. -=-=-=-=-=-=-=-=-=-=-=-= 413. What direction is given when the cuticle is broken? What suggestion is given when shrouding dead bodies? -=-=-=-=-=-=-=-=-=-=-=-= CHAPTER XXI. SECRETION. 414. In the human body are found many fluids and solids of dissimilar appearance and character. These are produced by the action of organs, some of which are of simple structure, while others are very complicated in their arrangement. These organs are called _Se-cre´to-ry_. ANATOMY OF THE SECRETORY ORGANS. 415. The SECRETORY ORGANS are the _Ex-ha´lants_, _Fol´li-cles_, and the _Glands_. 416. The EXHALANTS were supposed to be terminations of arteries or capillaries. The external exhalants terminate on the skin and mucous membranes; the internal in the cellular and medullary tissues. (Appendix I.)