If we now turn back again and make a brief survey of the various forms of affections of the genitals described on preceding pages, comparing them with those of the present day, such as we have opportunity to observe in modern times, we think every unprejudiced reader will be found ready to admit that they agree with these latter in _very nearly every_ respect whatever, and that _every_ doubt would be removed, if only the medical Writers had appended to the records of their observations in each case the words, “got by infection in coition.” But to what cause do we refer such cases as a matter of fact, notwithstanding the denial on the part of the patient that he has exposed himself to any infection? Do we not take it for granted as a certainty that such infection did actually precede? Are we in the habit of noting down in every instance in our day-book of cases the antecedent act of coition that occasioned the chancre or what not; and does this omission in any way imply that this did not first occur? To our mind at any rate the fact suffices that non-professional observers and even a professional one like Galen have supplied irrefutable evidence that some of these affections were acquired by coition. Amongst others, morbid outgrowths for example are manifestly shown to have been so set up by the statement that they occurred on the fundament of pathics; and it needs no great perspicacity to draw the conclusion that if (unnatural) coition produced them in the pederast, the same maladies occurring on the genital organs owed their origin to the same cause.