202 



Subject Index 



Psychological experiments, 149- 



156, 159-164, 182-183, 186-187 

 Pulmonary disease, 77-79 



Rabbits, lifespan, 11 



Radioiodine, deposition in thyroid, 55 



uptake of tracer dose, 52-55, 58 

 Bana catesbeiana, ageing patterns 



and latitude, 26 

 Rats, fertility, 20 



longevity, 37 



survival curves, 30-31 

 Renal blood content, and ageing, 52, 

 58 



blood flow, and cardiac output, 

 88-89, 191-192 

 Reproductive senescence in verte- 

 brates, 20-23, 37 

 Resistance to disease, factors 



influencing, 31-32 

 Rhinolophus, longevity, 27 

 Robins, longevity, 37 

 Rodents, ageing patterns, 9-10, 11, 

 12-13, 20, 25, 37 



reactions to stimuli, 51-55, 57-58 



survival curves, 30-31 



Sampling human population (see 



Population) 

 Sceloporus undulatus, ageing patterns 



and latitude, 26-27 

 Schizoid personality, 133-134 

 Serotonin, and mental disturbance, 



145, 146 

 Sheep, survival curves, 12-13, 14, 15 

 Shrews, ageing patterns, 28 

 Siderosis of liver in Africans, 



106-114, 188, 189 

 Skin, changes in, 66, 96-97, 99 



temperature, changes in, 80-84 



vasodilation in, 82-84 

 Snakes, ageing patterns, 21-22 



parasitic infection in, 33-34 

 Social adjustment, measurement of, 



175 

 Spirocercosis in dogs, 32-33, 101- 



102 



Stentor, isotopic labelling, 46 

 Sticklebacks (see Gasterosteus 



aculeatus) 

 Stimuli, reactions to, 51-59, 71-72 

 Suctorians, cell replacement in, 4 

 Suncus etruscus, ageing patterns, 28 

 Surveys, industrial, 149-153, 156- 



159, 164-168, 194-195 

 Swifts, ageing patterns, 28 



Temperature, effect on lifespan of 



invertebrates, 24, 25 

 Thermoreguiating mechanisms 



and ageing patterns, 25-28 

 Thymallus signifer, ageing patterns 



and latitude, 26 

 Thyroid, radioiodine uptake by, 



52—55, 58 

 Transplantation of fertilized ova, 

 120 



of ovaries, 116, 122-123 



of testes, 123 



of tumours, 123 

 Triton, lifespan, 9 

 Twin data on genetics of ageing, 



131-148 



Variability, 6-8, 32, 33, 71 

 Vigour, decline in, 4-5, 6, 8, 15, 17 

 Vital statistics, animal, 8-17 

 importance of, 8-11 

 modes of obtaining, 11-17 

 influence of disease, 31-33 



Water, extracellular, 191 

 measurement of, 192 

 intracellular, 191-192 

 and cardiac output, 88 

 Wolfhounds, survival curves, 12-13, 



30 

 Wolves (see Can is) 

 Wound healing, and collagen 

 changes, 70-71 

 and incidence of cancer, 104, 113 



Zoo populations, 12-13, 14, 15, 35 



Printed by Spottisivoode, Ballantyne & Co. Ltd., London and Colchester 



