M. began his apprenticeship by sweeping the office, and the old doctor held him to the very letter of the agreement, keeping him at the most menial service,--boot-blacking, bottle-washing, door-tending, etc.,--protracting his disease as he found the young man useful, till the old knave dared no longer delay the cure, for thereby the victim might go elsewhere for help. When cured, M. engaged to continue work for the small compensation that the doctor offered, especially since he and the old man had begun to understand each other pretty well, and each was equally unscrupulous as to the sponging of the unfortunate victims who fell into their hands. When the doctor was observed to prescribe from any particular bottle, M. took a mental memorandum thereof till such time as he could take a look at the label, thereby learning the prescription for such disease; and the result was a decision that if this was the science of healing, "_it didn't take much of a man to be a_"--_doctor_. When the old doctor was absent, M. would prescribe on his own account, charge an extra dollar or two as perquisites, and deposit the balance in the doctor's till. In course of time, by this process of extortion, solicitations, and the increasing perquisites, M. was enabled to set up doctoring on his own account. The old doctor died, and M. had it all his own way. The young self-styled doctor saw no particular need of making effort to acquire medical knowledge, but a diploma to hang upon his office walls, with the few disgusting anatomical plates (appropriated from Dr. S.), which were admirably adapted to intimidate his simple-minded dupes,--a diploma from some medical society would give character to the "institution," and such he would obtain. Being cited to court as defendant in a certain case, this _soi-disant_ "M. D." was compelled to retract a former statement that he had attended medical lectures in Pennsylvania College, where he graduated with honors, and come down to the truthful statement, _for once in his life_, and swear that he had obtained his diploma by _purchase_. His present rooms--house and office--are located in the heart of the city, and are not exceeded for convenience and neatness by those of the respectable practitioner. Having amassed a great fortune out of the credulity, misfortunes, and passions of the unfortunate, he has settled down to the plane of the more respectable advertising doctors, and the terrifying plates no longer cover the walls of the _best_ reception-room; but a few valuable pictures and the Philadelphia diploma are conspicuously displayed above the elegant furniture and valuable articles of _virtu_. The same extortions and reprehensible practices are still resorted to in order to keep up this "institution." His earlier history is gathered from _his own statements_, by piecemeal, by a confidential "student," the latter portion by _personal investigation_ of the writer.