290 



INDEX. 



Page. 



Heteroeyst - - 29 



Heterogenesis - - 9 



Heterosporous, Cryptogams 186 



Hive Bee, Reproduction 196 

 Hofmeister, Germination of 



Costnarin/m - 27 

 Reproduction of Mosses 



and Ferns - - 52 



Reproduction of Coniferse 57 



Holothuridse, Reproduction 85 



Homogenesis - - 9 



Homoiosporous, Cryptogams 186 

 Homology of the reproduc- 

 tive structures in gene- 

 ral - - - 229,248 

 Special do. - - 237,244 



Honey Bee, Reproduction 196 

 Huxley, Prof., Ovum of Pyro- 



soma • - 72 n 



Spermatozoa of Tethya 77 



Zoological Individuality 110 



Medusoids of Polypifera 125, 174 



Gonophores of Polypifera 126 



Reproduction of Salpa 141 



Homology of Medusae 147 n 



Germs of Aphis - 192 



Hydra, Reproduction - 120 



Hydra Tuba, Reproduction 120 



Hydractinia, Composite 



Structure - - 179 

 Hydrozoa, see Polypifera. 

 Hygrocrocis - - 47 

 Hymenium of Fungus - 49 

 Hymenomycetes, Reproduc- 

 tion - - 42,45 

 Hypliomycetes, Reproduction 41, 46 

 Hypottallus of Lichen - 49 

 Hypothesis, use in Science 17 

 Ihla, Defective Organization 176 

 Identity of Ova and Gemmae 205 

 Imago of Insect - 103 



Page. 



Impregnation, Modifications of 70 w, 



246 n 

 Theory - . - 204,231 



Incipient development of Un- 



impregnated Ova - 202 



Incompatibility of Ova and 



Gemmae - 205 



Individuality - . 109,165 



Inessential Sprouts - 155 



Infusoria - - 77 



Ink Movdd - - 47 



Insects, Metamorphosis 102 



Insemination, Relation to 



other epochal acts - 107 



Interpolation of Geramation, 



Table of - - 256 



Isoetes, Reproduction - 55 



Isophytoids - - 152 



Isozooids " - 152 



Itzigsohn, Development of 



Oscillatoria - 29 



Jelly-fishes, Reproduction 117 



Jenner, Germination of Clos- 



terium - 27 



Analogy of Ferns and 



Mosses - 53, 143, 183 



Jungerma7inia, Reproduction 49 

 Fructification - - 188 n 



Karsten, Conjugation of Si- 



phoneae - - 35 



Keber, Penetration of Sper- 

 matozoa - - 69 u 

 Eang's yellow^ worms • 115 

 Knox, Dr., Development of 



Sex 242, 245 



Kobelt, Wolffian Bodies - 244 



Koren on Development of 



Gasteropoda - 91 



Kiichenmeister, Origin of 



Parasites - - 8, 99 



Determination of drone ova 197 



