INDEX 



197 



Nisus formativus 34 

 Non-disjunction 189-142 

 Notch wing 104-lOC 

 Nucleus 91 



Origin of Species 35, 145 

 Ortiiogenesis 34 



Paleontology 24-37 

 Papilio polytes 63 

 Papilio tuiinis 63 

 Paramecium 181, 182 

 Paratettix 81 

 Peach eye color 114 

 Pea comli 55 

 Pearl 161 

 Peas 47 



Pigeons 172, 174, 175 

 Pink eye color 114, 115 

 Planarian 22 

 Plymouth Rock 76 

 Podarke 22 

 Polar bodies 126 

 Pole arms 5 

 Protozoa 181 



Pscudo-jKirthenogenesis 183 

 l'ur])le eye color 109 

 Pur])ose 4 



Rabbits 83, 170 

 Hats 176-180 

 licductin.i division 182 

 Re])roductive cells 96 

 Ruby eye color 106 

 Rudimentary organ 116 

 Rudimentary wing 70, 71, 107 



Sable body color 107 

 Science, definition of, 6 

 Segregation 41 

 Selenka 94 



Sepia eye color 13, 114 

 Sex chromosomes 118 

 Sex linked inheritance 75, 



118-130 

 Sexual dimorphism i^2 



Sheep 33 



Single comb ^H 



Sooty body color 50, 114, 115 



Speck 68,' 69, 111 



Spencer 146 



Spermatozoon 91, 98 



Stars, evolution of, 6 



St. Hiliare 27-30 



Strap wing 110, 111 



Stumpy wing 11 



Sturtevant 75, 143 



Stylonychia 183 



Survival of the fittest 146 



Systematist 85 



Tails 33 



Tan flies 106, 107 

 Tetrabelodon 191 

 Trefoil 111 



Truncate wing 111, 112, 167, 

 168 



L'n Folding })rliu'ii)le 34 

 Unio 22 



Unit character 72, 73 

 Use 31 



Variation, discontinuous 13 

 ^'ermilion eye color 108, 163 

 Vestigial wing 11, oo, 56, 109, 



133 

 Vital force 34 



Wallace 36 

 "Walnut comb Ho 

 Weismann 17, 3P33 

 Wilson, E. B. 125 

 Wingless 67 

 AViniwarter 126 

 White eye color 13, 75, 119-130 

 AVhiting eye color 163, 164 

 ■ Woodruff "183 



Yellow l)ody color 108, 127-129 

 Yolk sac 16, 17 



Zeleny 169 



