The quest through the ages for a mystic agent which shall revive the faded youth of the aged has recently been rewarded—at least so the newspapers allege— by the discovery of the fountain of youth. Indeed, two such fountains have been acclaimed from different sources. Neither of the methods proposed, it is true, promises more than partial rejuvenation of the old. Neither offers, for example, to grow natural teeth to replace artificial dentures, or to garnish a bald pate with a luxuriant thatch. Yet, if a method will renew sexual vigor—and this is the alluring promise—full many a Faust will eagerly barter his worldly goods for drafts from the fountain.
The more sensational of the two methods of rejuvenation now in the limelight is the transplantation into the old man of testicular substance removed from young men, monkeys, goats or whatever the market affords. Each of these sources of material