166 



ANIMAL INDIVIDUALITY 



Pores, of Sponges, 91, 97 



Potentiality, 8 



Printing press, 16 



Printing, and increase of indivi- 

 duality, 26 



Pronuba, 128, 135, 142, 158 



Protoplasm, its properties in rela- 

 tion to individuality, 8, 17, 49, 

 56 ; its advancing flow, 28 



Protozoa, reproduction in, 17, 18, 

 19 ; free-living cells, 38, 157 ; 

 and metazoa, 44, 67, 120, 150 ; 

 views as to individuality of, 67 ; 

 sexual reproduction in, 67, 71 ; 

 size of, 88 ; relative lack of 

 independence, 5 



Psychical research, 30 



Quadruplets, always given birth 

 to by one species of Armadillo, 

 68, 70 



Raindrops, influence of electricity 

 on, 11 



Regeneration, 10 n, 11, 19, 21, 

 46-47, 147 ; an original attri- 

 bute of life, 46; in Vertebrates, 

 46 ; in Protozoa, 10 n, 47 ; in 

 Flatworms,47,144; in Sponges, 

 94-97 



Regulation, 11 



Reorganization as opposed to 

 true regeneration, 95, 145, 149 



Reproduction, in Protozoa, 17, 

 41 /, 42 ; of molecules, 51 ; and 

 individuality, 18, 19, 40, 42; 

 by budding, 38, 40; by fission 

 (division), 41-43; asexual, 

 38-43, 81 ; sexual, 43-45 ; not 

 involved in metamorphosis, 77 ; 

 by cuttings and slips, 80 



Rhynchops, 133 



Rome, 154 

 Rook, 133 



Roux, extension of idea of natural 

 selection, 6 ; idea of growth, 17 



Salamander, replacement of lost 

 organs, 46 



Scurf, 137 



Sea-urchins, artificial production 

 of twins, quaduplets cfec., 69, 

 70 ; metamorphosis, 79 n ; will 

 die if cut in half, 83 n 



Self-consciousness, implies exten- 

 sive individuality, 30 



Sense-organs, and individuality, 

 64, 140 



Sexual fusion, 43, 45, 67, 70-72, 

 80, 81 ; in Bacteria, 71 ; in 

 Protozoa, 67 ; in Metazoa, 80 



Sexual reproduction, 43 ; not es- 

 sential, 45, 70 



Sheep, and Liver Fluke, 23 



Siphoneae, single cells, 89 



Siphonophora, 119-122, 141, 158 



Size, 64 ; advantages of, 5, 7, 86 ; 

 disadvantages of, 17 



Skeleton, 17 



Skimmer, 133 



Sleeping sickness, 127 



Snails, and Liver Fluke, 23, 24 



Societies, of man, 65, 143, 158 



Solar System, difference from an 

 individual, 9, 21 



Sparrow, 133 



Species, 27 



Species-individuality, 23-25, 82 



Speech, increases individuality, 

 26, 29 



Spermatozoa, 18 n 



Spicules, of Sponges, 92, 96 



Sponges, 90, 141, 148, 151, 158 



Sports, in plants, 80 



