Varicosity, 151 Vascular lesions, 144 Vasectomy, changes due to, 74 changes in testes following, 77, 78 effect on sexual activity, 76 rejuvenescence following, 71, 78 Veins, changes in, 108 Venous thrombosis, 151 Vertebrae, changes in shape of, 99 Vertigo, causes of, 143 Visceral degeneration, 102, 103 Visceroptosis, 102 Vitality, danger of excess of, 54 loss of, 115, 119, 135 waning of, 139 Vitamins, influence on growth, 13 Voltaire, mental activity at advanced age, 53 Voronoff, testicular grafting by, 78 Walker, Kenneth, on changes in the testes, 112 on prostatic enlargement, 112, 113 Walking, functional disturbances in, 147 Waterhouse, B., on the onset of old age, 27 Watson, Thomas, Linacre Lecturer, 5 Weber, Hermann, 8, 34, 43, 57, 119 Weber, Parkes, 35, 104 Weissmann, 9, 16 “Will to live,” 35, 47 Will power, failure of, 122 Williams, Leonard, 61, 113, 128 Wilson, S. A. K., 144 Wounds, healing of, 126 Wrinkles, cause of, 93 Yeo, B., 50 Zorten, Petrasch, centenarian, 20 THE END _Printed in Great Britain by_ R. & R. CLARK, LIMITED, _Edinburgh_. By SIR HUMPHRY ROLLESTON, K.C.B., M.D. DISEASES OF THE LIVER, GALL-BLADDER AND BILE-DUCTS Second Edition. Illustrated. 8vo. 31s. 6d. net. _LANCET._--“An admirable work of reference in every sense. It presents all the information obtainable from a very wide experience and an encyclopaedic acquaintance with the literature of the subject in a practical, interesting, and readily available manner.... We feel confident that it will long remain the standard work of reference upon the subjects of which it treats.” _BRITISH MEDICAL JOURNAL._--“This is the most considerable work on diseases of the liver which has appeared since the classical treatise of Murchison. It fully deserves to take a high place among modern text-books, and we heartily congratulate Dr. Rolleston on his success.” _EDINBURGH MEDICAL JOURNAL._--“This compendious treatise is a veritable mine of information on diseases of the liver and biliary passages. No aspect of the subject, however small, seems to have escaped the author’s notice, and his elaborate descriptions of the pathology and clinical signs of liver disease, drawn from his own large experience and an exceptional acquaintance with the literature, render the book invaluable for study and for reference.... Dr. Rolleston’s book is unquestionably a standard authority, and is a model of what a treatise on a single department of medicine ought to be.” A SYSTEM OF MEDICINE BY MANY WRITERS Medium 8vo. Second Edition. EDITED BY THE RIGHT HON. SIR T. CLIFFORD ALLBUTT, K.C.B., F.R.S. AND SIR HUMPHRY ROLLESTON, K.C.B., M.D. Vol. I. Prolegomena and Infectious Diseases. 31s. 6d. net. Vol. II. Part I. Infectious Diseases (continued), Intoxications. 31s. 6d. net. Part II. Tropical Diseases and Animal Parasites. 31s. 6d. net.