The ordinary chancre is characterized by a hollow centre, a hard and ragged edge, a yellow surface, with a deposite of tenacious matter, and a red and inflammatory margin. There is also a hardness felt at its base on taking the part up between the fingers. This has already been shown; but as illustrations multiply, the possessor of this publication, especially if he be an invalid, will recognise the annexed. It exhibits the ordinary chancre on the inner part of the prepuce, the glans, and the orifice of the urethra—no unfrequent seat of chancre. [Illustration] Many ulcers assume a very indolent form, and remain quiescent for a long period. One patient I knew, who consulted me for rheumatism, and who disavowed ever having had syphilis. He took vapor baths, which assuaged the pain, but did not remove it. Accident discovered to me the existence of a sore on the penis, by observing the dressings of the same, carefully placed on the corner of the mantel-piece in the bath-room. The following was the appearance of the sores. He had endured them for nearly three months, nor had he perceived much alteration, either for better or worse. The disease was properly healed, and he soon got well. [Illustration] Another kind is one denominated the superficial, with raised edges. It is more frequently seated at the upper part of the prepuce, and creating a thickening of it, ending in phymosis, which lasts a long time after the cure of the ulcers. This kind of chancre is sometimes very obstinate, and continues many weeks. The following illustration portrays its presence near the edge of the _corona glandis_. [Illustration] There are two other kinds of sores called the _phagedenic_ and _sloughing_ ulcers and chancres. The phagedenic is a corroding ulcer without granulations. It is also destitute of any surrounding induration, but frequently its circumference is of a livid red color. When the disease is injudiciously treated, the whole of the penis will be destroyed in a very short time. The absence of coloring detracts from a faithful representation of the kind of sore just alluded to. The drawing is sketched from Mr. Skey’s work on Syphilis. [Illustration: _a_—The ulcer.] Another and more confirmed specimen from the same authority is presented. It represents the _sloughing_ ulcer. [Illustration: _a_—The ulcer on the prepuce. _b_—The ulcer on the penis.]