General Index 



Mongolism, 126 



Mongoose, 34 



Morphogenesis, 8, 10, 11, 64, 139, 



162, 170 

 'Morphogenetic' senescence, 36-7, 



97, 140 

 Mother, age of, 125 ff. 

 Moths, 98, 99, 132 

 Motor cars, 'death rate', 20, 33 

 Mouflon sheep, 28, 44 

 Moulting hormone, 146, 147 

 Mouse, 20, 24, 33, 42, 43, 47, 121, 



122, 125, 126, 127, 129, 130, 



151, 186 

 harvest, 47 



multimammate, 43, 130 

 Mule, 48 

 Mussel, 106 



Mutations, unfavourable, 118 

 somatic, 168 



Nematodes, 56, 84 

 Nemertines, 84 

 Nephra, loss of, 34 

 Neurones 



exhaustion, 45, 140, 162 



life-span, 38, 80, 163 



loss of, 100 



regeneration, 163 

 Neurosis, induced, 153 

 Nucleocytoplasmic ratio, 29 

 Nucleus, in cilia tes, 118-19 

 Nudibranchs, 36, 102 



Oestrogens, effects of, 178 

 Oligochaeta, 83 

 Oogenesis, postpubertal, 180 

 Organ size, determination, 154 



weight, in rats, 26 

 Organelles, 'inheritance' of, 115-16 

 Osteoporosis, 179 

 Ostrich, 50 



Ova, exhaustion of, and menopause, 

 180 



tissue culture of, 171 



transplantation, 129 

 Ovary, 177 ff. 



Owls, 50 



Oxygen uptake, 33 



Oysters, 104 



Palaeolithic man, mortality, 112 



Pangolins, 45 



Pantothenic acid, 92-3, 145 



Parabiosis, 129, 156, 199 



Paramecium, 12, 118-19, 168 



Parasites, 56, 84 



Parkinson, James, 192 



Parr, Old, 62 



Parrots, 46, 49, 50 



Passerines, 49 



Pathological theories, of ageing, 10 



Pathology, in human old age, 195 



Pelecypods, 54, 55, 67, 80, 102, 106- 



107 

 Pelican, 50 

 Perch, 54 



Pets, domestic, longevity, 48, 64 

 Phagocytosis, 170 

 Phosphatase, 178 

 Phylogeny of senescence, 160-1 

 Pig, 179 



Pigeons, 49, 50, 64 

 Pike, 53, 70 

 Pineal gland, 155, 175 

 Pipit, meadow, 110 

 Pituitary gland 



age changes in, 167-8, 173 



mitosis in, 167 

 Plaice, 12, 68-9 

 Planarians, 9, 10, 32, 83 

 Plants, senescence, 4, 120 



monocarpic, 2, 77 

 Plasmagenes, 120 

 Platyhelminths, 56 

 Polyploidy, of meganucleus, 119 

 Ponies, 48 



Porifera, 12, 56, 80-1 

 Post-inhibitory rebound, 155-6 

 Potentialities, selection for, 38 

 Predation, selective, 25 

 Press juice, effect on explants, 1 70 

 Primitive man, 111, 112, 193-4 

 Probability states, and growth, 157 



250 



