Later we will dwell a little upon some of his results. It is worthy of note in passing that his first experiment upon a human being was an unqualified success. He transplanted the goat-glands into a farmer who was forty-six years of age, happily married, but childless, and one year after the transplantation a child was born, who was christened "Billy" in honor of the circumstances responsible for his birth. By patient selection Dr. Brinkley has found that the Toggenburg breed of Swiss goat gives him the best possible stock to use in his gland-work. This choice was forced upon him by results obtained by the use of other breeds. He found that the Toggenburg goat gave him best results because the animal, besides its sound health, carries none of that persistent odor which is peculiar to male goats the world over, and which, if shed abroad by a human being would make his neighborhood unpleasant. He found that the best age of the male goats whose glands were to be transplanted was from three weeks to a month. He found that the best age at which to use the ovaries of the female goat was one year, because, unlike its youthful brother, the female goat's sex-activities are not developed before that age. His method of transplanting the glands into a man is by making two incisions in the man's scrotum under simple local anesthesia, a practically painless operation, but from this point on the technique varies according to the conditions presented by the case. No two cases are exactly alike, and Dr. Brinkley performs no two operations exactly alike. That is the reason, he explains, why, with the best will in the world to teach his fellow-practitioners what to do and how to do it, he is nevertheless unable to state in writing exactly what treatment to use to cover all cases. It cannot be taught by correspondence, and, simple though it sounds to hear it, it cannot be learned by attendance at a few clinics. It is delicate in this sense, that if it is not rightly performed in the individual case the glands will slough. That means loss of time, loss of temper, and the waste of a perfectly good pair of young goat-glands. Another very important thing which his experiments have taught Dr. Brinkley is this: the glands on being removed from the goat must immediately be placed in a salt solution warmed to blood-heat, and they must be used on the human being WITHIN TWENTY MINUTES from the time they are taken from the goat. No such thing is possible as keeping these glands in the refrigerator for twenty-four hours, or anything of that kind, before using. The more quickly after removal from the animal they are used the more likely they are to take hold and grow. In his men cases he uses sometimes one gland, sometimes two; sometimes the whole gland, just as it came from the young goat, sometimes a part of the gland only, but he leans to the opinion that the gland of the three-weeks-old goat gives best results if used entire, without trimming.