INDEX 



Abnormal abdomen 109 

 Abraxas 78-81 

 Allantois 17 

 Allelomorphs 83-84 

 Altenburg 112 

 Amnion 16-17 

 Andalusian fowl 45, 46 

 Annelids 22 

 Antlered wing 111 

 Apterous wing 11 

 Arc wing 111 

 Aristae 104 



Bar eye 67, 108, 169 



Bateson 18, 34, 36 



Beaded wing 11, 115 



Beans 147-149, 157 



Belgian hare 171 



Bent wing 116 



Bergson 30, 31 



Bildungstrieb 34 



Biogenetic law 15, 18, 19, 21 



Biometricians 156 



Bird 21, 23 



Bithorax 65, 112, 113, 



Black body color 111, 133 



Blakeslee 152 



Bridges 114, 143, 163 



British Association 36 



Briinn 40 



Buff eye color 109 



Buffon 27 



Castle 176-180 

 Cat 33 

 Cell 90, 91 



Chance variations 37 

 Chick 16, 17, 20 

 Chromatin 184 



Chromosome group of Drosoph- 



ila 102 

 Chromosomes 91, 95, 96, 98, 130, 



131, 132 



Cleavage 21, 22, 94 

 Clover butterfly 62 

 Club wing 69, 70, 108 

 Colias philodice 62 

 Color blindness 77, 125 

 Comb of Drosophila 103 

 Combs of fowls 33, 54 

 Comparative anatomy 7, 8, 9, 



14 



Corn 150, 153, 172 

 Correns 41 

 Cosmogonies 27 

 Cream eye color 163, 164 

 Crepidula 22 



Criss-cross inheritance 78 

 Crossing over 131-133 

 Cuenot 178 

 Curled wing 115 

 Curved wing 111 

 Curve of probability 149 

 Cut wing 11, 104 



Dachs legs 112 



Dahlgren 90, 92 



Darwin 15, 24, 28, 32, 36-39, 64, 



145, 146, 152, 154-156 

 Dendy 188 



De Vries 18, 147, 156 

 Dexter 170 

 Dichaete 114 

 Difflugia 184-187 

 Discontinuous variation 13 

 Disuse 31 

 Drosophila ampelophila 10, 12, 



195 



