INDEX 



267 



Rejuvenation, 201 

 Remak, R., 78, no 

 Remak's ganglion, 69 

 Renal portal veins, 54 

 Renal veins, 54 

 Reproduction, 4 



of Actinosphserium, 142 



of Amoeba, 133 

 of Badhamia, 150 



of Euglena, 166 



of Hydra, 236 



of Paramecium, 196 



of Polytoma, 175 



of Vorticella, 209 

 Reproductive organs, Obelia, 250 

 Reproductive system, 10 

 Reservoir, 165, 209 

 Respiratory mechanism, 7 

 Resting stage, 168, 176, 180 

 Retina, 69 

 Rhinencephala, 63 

 Rhizopoda, 136 

 Ribs, 29 



Rima glottidis, 42 

 Ring canal, 245, 248 

 Rods and cones, 88 



Sacral vertebra, 32 



Sacculus, 71 



Saprophytic nutrition, 164, 171, 175 



Sarcode, 77 



Sarcolemma. 96, 97 



Sarcomeres, 96 



Sarcoplasm, 96 



Sarcostyles, 96 



Sarcous elements, 96 



Scaphoid bone, 37 



Scapula, 30 



Schleiden, no 



Schneider, A., in 



Schwann, Th., no 



Sciatic artery, 5 1 



Sciatic nerve, 60 



Sciatic plexus, 60 



Sciatic vein, 54 



Sclerotic, 69 



Sclerotium, 147 



Secondary cysts, 145 



Secretions, 7 



Sections, method of, 228 



Segmentation cavity, 125 



Segmentation of ovum, 122 



Semicircular canals, 71 



Semilunar valves, 48, 57, 58 



Sense capsules, 26 



Sensory root of nerve, 61 



Serial homology, 35 



Sex, 173, 177, 201, 214 



Sexual development of Hydra, 236 



Shoulder girdle, 30 



Sinus venosus, 46, 56 



Skein, 112 



Skeleton, 6 



Skull, 22, 24 



Solar plexus, 68 



Somatic cells, 182, 217 



Special senses, 9 



Species, 2, 256 



Spermatids, 118 



Sperm nucleus, 120 



Sperm sacs, 158 



Spermatocytes, 118 



Spermatogonia, 118 



Spermatozoa, 117, 118, 122, 218 



Sphenethmoid bone, 26 



Spinal cord, 58 



Spinal nerves, 60, 61 



Spindle, mitotic, 114 



Spiral valve, 48 



Spireme, 112 



Spleen, 43 



Splenic artery, 51 



vein, 55 



Spongioplasm, 97 



Sporangium, 151 



Spores, 135, 145, 151, 172 



Sporoblasts, 156 



Sporophore, 158 



Sporophyte, 252 



Sporozoa, 154 



Sporozoites, 157 



Springing Monad (see Bodo) 



Squamosal, 28 



Stalk of Vorticella, 206 



Starch, in Infusoria, 163, 175 



Stegocephalia, 63 



Stereum hirsutum, 147 



Sternum, 30 



Stigma, 165 



Stock (see Colony) 



Stomach, 40 



Stomata, 39 



