+The Spread of the Germs Over the Body.+--The secondary stage of syphilis, like the primary stage, is an arbitrary division whose beginning and ending can scarcely be sharply defined. Broadly speaking, the secondary stage of syphilis is the one in which the infection ceases to be confined to the neighborhood of the chancre and affects the entire body. The spread of the germs of the disease to the lymph-glands in the neighborhood of the primary sore is followed by their invasion of the blood itself. While this may begin some time before the body shows signs of it, the serious outburst usually occurs suddenly in the course of a few days, and fills the circulating blood with the little corkscrew filaments, sending showers of them to every corner of the body and involving every organ and tissue to a greater or less extent. This explosion marks the beginning of the active secondary stage of syphilis. The germs are now everywhere, and the effect on the patient begins to suggest such infectious diseases as measles, chickenpox, etc., which are associated with eruptions on the skin. But there can be no more serious mistake than to suppose that the eruptions which usually break out on the skin at this time represent the whole, or even a very important part, of the story. They may be the most conspicuous sign to the patient and to others, but the changes which are to affect the future of the syphilitic are going on just at this time, not in his skin, but in his internal organs, and especially in his heart and blood-vessels and in his nervous system. +Constitutional Symptoms.+--It is surprising how mild a thing secondary syphilis is in many persons. A considerable proportion experience little or nothing at this time in the way of disturbances of the general health to suggest that they have a serious illness. A fair percentage of them lose 5 or 10 pounds in weight, have severe or mild headaches, usually worse at night, with pains in the bones and joints that may suggest rheumatism. Nervous disturbances of the most varied character may appear. Painful points on the bones or skull may develop, and there may be serious disturbances of eye-sight and hearing. A few are severely ill, lose a great deal of weight, endure excruciating pains, pass sleepless nights, and suffer with symptoms suggesting that their nervous systems have been profoundly affected. As a general thing, however, the constitutional symptoms are mild compared with those of the severe infectious fevers, such as typhoid or malaria.