34 



Cumulative Subject Index 



Kidney 



role of in water and electrolyte regula- 

 tion, 4, 229-249 

 tubular excretion, changes due to age, 

 4, 233, 247 

 Kidney disease, in man and rat, 5, 74-77 

 Killifish, lifespan of, 5, 220 



Labidesthes, growth of, 5, 156, 157, 158 

 Labidesthes sicculus, mortality rate of, 5, 



146 

 Labour, dehydration during, 4, 94, 95 

 Lactate, diffusion of through aortic 



tissue, 1, 72-74 

 Lactic acid, in placenta, 2, 137, 141 

 Lagonistica senegala, lifespan of, 5, 99 

 Lamniformes, lifespan of, 5, 220 

 Larynx, cancer of in old people, 1, 21 

 Laws of mortality, 5, 2-5, 302-311 

 Learning, adaptation in, 3, 62 



in old people, 1, 41, 215 



variation with age, 1, 215 

 Learning ability, in animals, 3, 62, 64-65 



in human beings, 3, 175-180 

 Leaves, amino acids in senescent, 2, 203, 

 206, 207, 212 



catabolism of protein in, 2, 202-205, 

 206, 207-208, 212, 214 



effect of light on ageing of, 2, 211 



metaboUsm in senescent, 2, 202-214 



protein catabolism in, 2, 202-205, 206, 

 207-208, 212, 214 



respiration in senescent, 2, 205-209, 

 212,213,214 

 Lebestes reticulatiis, eflFect of diet on, 5, 

 169 



fecundity of, 5, 209 



growth of, 5, 229, 230 



lifespan of, 3, 15-16, 30-31 



regeneration in, 5, 208-210 



reproduction in, 5, 171 

 Lemur, oogenesis in, 2, 39-40 

 Lepidosteiformes, lifespan of, 5, 223, 224 

 Leucichthys kiyi, survival curves of, 5, 143, 



145 

 Leucichthys sardinella, metabolism of, 5, 

 169 



mortality rates of, 5, 145 

 Leucine, in elastin, 1, 91, 94, 96 

 Leuresthes tenuis, survival curves of, 5, 



143 

 Leydig cells, in testis, 2, 91, 92, 93, 94, 95, 



97, 98, 99 

 Lipid(s), content of sweat glands, 2, 191, 

 195 



in aortic membrane, 1, 74, 78 



in Leydig cells, 2, 93 



in placenta, 2, 122 



loss of from red cells, 2, 218, 219, 220, 

 223, 242 

 Lifespan, allometry of, 5, 125 



and delayed maturation, 1, 27-30 



and hibernation, 2, 249; 5, 103-104 



and nutrition, 1, 186-193, 194-199 



Lifespan 



and parental age, 5, 21-34, 43-47, 53 

 effect of antibiotics on, 3, 36 

 effect of basal metabolic rate on, 3, 31 

 effect of brain and body weight, 5, 115- 



139 

 effect of diet, 1, 30; 5, 169, 249-255, 282 

 effect of disease on, 3, 31 ; 5, 72-89 

 effect of early maturation, 1, 201-208 

 effect of egg laying on in Drosophila, 5, 



275-278 

 effect of environment, 5, 167-168, 229 

 effect of growth and size, 5, 147-159, 



160-166 

 effect of growth hormone, 1, 29 

 effect of hibernation, 2, 249; 5, 103-104 

 effect of late maturation, 1, 196-197 

 effect of metabohsm on, 5, 103-104, 



124-126, 129, 136-137, 169-170 

 effect of mitotic inhibitors, 5, 136 

 effect of nutrition on, 1, 186-193, 194- 



199;3, 24, 25, 28, 34, 35, 36 

 effect of parental age, 5, 21-34, 43-47, 



53, 259-262 

 effect of radiation on, 5, 19-20, 138- 



141, 282, 290, 292 

 effect of reproduction, 5, 179, 275-279, 



284-285 

 effect of temperature, 3, 24-25 

 effect of temperature on in Drosophila, 



5, 271-279, 283, 284 

 effect of thyroid gland on, 5, 137 

 effect of weight on, 1, 203 

 genetic aspects of, 5, 33, 55, 137 

 hereditary aspects of, 1, 238-241 

 increase of, 1, 179, 217 

 in nineteenth century, 5, 23, 32 

 mathematical basis of, 5, 286-296 

 measurement of, 5, 133-134, 138-141 

 methods of study, 5, 21-26 

 of Africans, 3, 105 

 of albatross, 5, 100, 103 

 of Ammotragus lervia, 3, 12, 13, 14, 15 

 of Amphibia, 3, 9 

 of animals, 3, 3, 8-11 



cause of decrease in, 3, 4—6 



methods of obtaining data, 3, 11-17 

 of Arabian horses, 5, 42 

 of Ardea cinerea, 5, 99 

 of bats, 3, 27; 5, 103 

 of bees, factors influencing, 5, 23 1-246 

 ofbirds, 1,4;3,9, 17, 28 



in captivity, 5, 103 



in Nature, 5, 90-105 

 of bison, 5, 105 



of Boselaphus tragocamelus, 3, 12-13 

 of bull frog, 3, 26 

 ofbuUs, 5, 64-65 

 of Buteo buteo, 5, 99 

 of buzzards, 5, 99 

 of Canis, 3, 12-13, 14, 17; 5, 134 

 of Capreolus capreolus, 5, 92-94 

 of caribou, 5, 92-94 

 ofcat, 5, 134 



