INDEX. 



Adjustment between internal 

 and external relations, 40 



Adler on parthenogenesis in 

 gall-wasps, 62 



Adult organism, 6 



Albrecht on parthenogenesis, 

 56, 58 



Alcippe, 183 



Alternation of generations, 115 



American naturalist on spike- 

 horn deer, 298 



Anchorella, 179 



Ancon sheep, 299 



Animalculist, 22 



Annelids, 173 



Anolis, 198 



Antirrhinum, 132 



Apple, 90 



Apus, 58 



Arbacia, 66 



Argus pheasant, 201 



Aristotle on parthenogenesis, 55 



Aristotle on latent sexual char- 

 acters, 85, 105 



Artemia, 58, 91 



Arthropoda, sexual differences 

 in, 173 



Asexual reproduction, 11, 17, 

 143, 249 



Ass and horse, hybrids from, 

 127 



Babyrusa, 205 



Bachman on variation of tur- 

 key, 150 



Balfour on polar globules, 71 

 Barnacle, sexual differences in, 



179, 181 

 Barrington on colors of birds, 



207 



Basset on parthenogenesis, 62 

 Bechstein on spurred hens, 210 

 Bee, reproduction of, 9 



" parthenogenesis in, 60 



" variation of, 145 

 Beetle, sexual differences in, 



191 

 Bell-bird, sexual differences in, 



202 

 Birds, female modification in, 



203 

 Birds, sexual differences in, 199 



" weapons, etc. , originally 



acquired by male, 199 

 Bischoff on parthenogenesis, 

 Blumenbach on Polish fowl, 226 

 Bombyx, 58 



Bonnet on evolution, 20, 85 

 Branchippus, 173 

 Buceros, 201 

 Budding in hybrids, 11 

 Bud- variation, 84, 144 

 Buffon on development, 26, 85 



