Gland Rejuvenation Expert Will Fit Apes to Patients’ Need Grimaldi, Italy.—Dr. Serge Voron off, famous for his “monkey gland” rejuvenation operations, declared that he that he was on the verge of another great discovery in his re search to prolong the life of man. He and that he hoped by classifying the blood of monkeys used for rejuv enation operations, as other scientists classify the blood of human beings for transfusion, to be able to solve one of the greatest difficulties which he and his assistants have encountered since he made his original discovery. “We have sought to discover why the average grafted gland becomes in operative at the end of a period vary ing from three to five years.” Seated in his laboratory , Grimaldi, the fa mous surgeon, within a stone’s throw of the cages in which he keeps his many monkeys, discussed his work which has intrigued the imagination of the world. “Our research has been successful,” he continued. “We have taken the third step forward in rejuvenation. The first was the discovery of my theory that if a man’s worn-out glands were replaced by new ones he would be rejuvenated. The second was the discovery of the technique of operat ing, enabling us to put the theory of the discovery into practice. And the third was our discovry of the reason why the average grafted gland be comes inoperative after a period of three to five years. We have found the reason, and I hope that by classi fying the blood of monkeys we can find the remedy. WILL TAKE BLOOD TeITS. “What I mean is this: When it be comes necessary to perform an opera tion for blood transfusion, the sur geons do not indiscriminately accept anyone that offers himself. Instead, as is known, blood tests are taken to determine what individual is likely to be best suited to the patient—which one’s blood is most suitable to mix the blood of the patient. “It is this process of classification of blood that we intend to experiment with in performing rejuvenation oper ations in future. In the past, the only process of elimination among monkeys that we used was to give the animals a very strict medical examination to determine only their good health and freedom from disease. “From now on we shall see to it that monkeys are used whose blood is best suited to the blood of the patient. Tests on the monkey and the patient will be more and we will make our selection after we have studied the tests. “By this means, we hope that the life of the grafted glands will be con siderably prolonged, and we believe the percentage of successes in rejuv enation operations will be considerab ly increased.” Dr. Voronoff said it was too early for definite certainty of his new theory, but that he thought the blood tests would “solve the problem.”