Page. 



Siphonese, Reproduction 34 



Simulation of Alternation 221 



Smith, J., of Kew, Partheno- 

 genesis of Cselobogyne 199 

 Smut, Development - 42 



Somatic and topical life 177 



Soredium of Lichen - 49 



Special homology of reproduction 237 

 Spermagonium of Lichen 48 



Spermatia of Fungi and Lichens 41 

 Spermatic Element - 10 



Liquor - 231 



Ultimate Corpuscules 229 



Homologies - 235 



Theory of Action - 203,206 

 Spermatophores 225 



Spermatozoa - 68, 230, 177 



Self-development - 203 



Sphoeria, Reproduction 41, 46 



8phceroplea, Reproduction 33 



Spinula of Ascidia - 91 



Spirogyra, germination 25 



Sponge, Spermatozoa - 77 



Spontaneous Generation 2 



Spores, Conjugate 27 



Resting, or winter - 28 



Of Fungi 41 



Of the higher and lower 



Cryptogamia - 187 



Sporocarp - 56 



Sporocyst - 113 



Sporophore . - 225 



Sporosac . . 122 



Spurred Rye, Development 44 



Star-fish do. 86 



Statoblast of Polyzoa - 222 



Steenstrup, Alternation of 



Generations 109 



Development of Distoma 112 

 Hectocotylus-arm of Cuttle- 

 fish - - 225 n 



INDEX. 295 



Page. 



Stein, Metamorphosis of Protozoa 80 

 Stolon of Tunicata - 90 



Strobila - - 126, 132 n 



Stylospore of Lichen - 48 



Suminski, Germination of Ferns 57 n 

 Summary of Conclusions 212 



Survey of Vegetable reproduction 17 

 Survey of Animal reproduction 68 

 Suspensor of Embryo 182, 188 



Syllis, Caudal gemmation 100, 138, 

 180 n 



Synapta, Parasite of 92 



Fission - . 87 



Syngamus, Conjugation 79 



Synoecious arrangement 247 



Syzygites, Conjugation 48 



Table of the Modifications of 



Conjugation - 26 



Of the Protophyta - 31 



Of the Modifications of Im- 

 pregnation . 71 

 Of Epochal acts - 107 

 Of the Structure of Eggs 



and Seeds 235 



Of the Homology of Repro- 

 duction 236 

 Of the Protomorphic, Or- 

 thomorphic, and Gamo- 

 morphic Stages - 237, 240 

 Of Sexual Arrangement 248 

 Of the Genetic Cycle 254, et seq. 

 Explanations - 253, 260 

 Tcenia, Origin and develop- 

 ment - - 96,131,161 

 Tankworm - 98 

 Tapeworm, see Tsenia. 

 Teeth, Proper Life - 178 

 Terebella, Gemmation 139 n 

 Termites, Neuters - 105, 168 

 Tethya, Spermatozoa - 77 

 Tetrarhynchus, Development 98 



