194 THE FIRST PRINCIPLES OF HEREDITY 



Character, acquired, 53, 55, 56, 

 80. 93, 94, 95, 96, 97, 98, 

 99, loi, 102 

 compound, 132 

 masked, 136 

 unit-, 139 

 Chromatin, 30, s^, 66 

 Chromomere, 58 



Chromosome, 32, ^y, 58, 64, 65, 

 66. 67, 68, 74, 91, 117, 

 119 

 accessory, 91 

 Civihzation, 104, 176 

 Cladocera, 24 

 Class, 156, 157, 179 

 Cleft -palate, 81 

 Colour-blindness, 109, 112 

 Comb of fowl, 133 

 pea, 133, 134 

 rose, 133, 134 

 single, 133, 134 

 walnut, 133, 134 

 Compound characters, 132 

 Conjugation, 17 

 Consanguinity, 118 

 Consumption, 155. See also 



Tuberculosis 

 Contribution of ancestors, 75, 



168 

 Copulation, 22, 89 

 Cowpox, 116 

 Coral, 14, 24, 34 



Correlation, 155, 156, 159, 160, 

 161, 164, 165 

 co-efficient of, 161, 162, 164, 



168 

 diagram of, 159 

 table, 157 

 Correns, 120 

 Crab, 9 

 Cruster, 35, 49 



aquatic, 24, 25 

 Curve, normal, 149 



frequency, 143, 146, 



149, 150 

 of frequency of error, 

 146 

 symmetrical, 151, 152 



Curve of variability, 148, 151 

 Cuttle-fish, 23 



Dalton, 112, 139 

 Daltonism, 112 

 Daphnides, 60 



Darwin, 51, 54, 56, 59, 85, 86, 

 87, 93. 94. 106, 107, 118, 139, 

 143, 155, 165, 174 

 Darwinism, 4, 80 

 Deafness, 109 

 Degeneration, 102, 114 

 Delage, 62,, 69 

 Dementia, 115 



Determinant, 57, 62, 64, 71, 7-^, 

 7^,79, 80, 85, 89, 117, 140 



homodynamous, 75 



heterodynamous, 70, 71, 72 

 Determinate, 80 

 Development. 45. 7Z, 77, 78, 79, 



105, 115 

 Deviation, 154, 161 

 De Vries, 120, 140, 143, 144 

 Dihybrid, 128, 132, 135, 137, 139 

 Dihybridism, 127 

 Di-oecious, 22 

 Diphtheria, 116 

 Diptera, 60 

 Disease, 108, 114, 118 



congenital. 108, 109 



inborn, 108, 109 



infectious, 1 1 5 



inherited, 112 

 Division, 11, 32 



artificial, 9 



differential, 77 



doubling, 7?) 



integral, 78 



reducing, 2,7, 43, 65, 66, 67, 

 69. 85 



unequal, 78 

 Dog, 86, 99 

 Dominance, 131 



Dominant, 121, 123, 124, 125, 

 126, 127. 128, 129, 130, 

 131. 138. 140 



impure. 130 



pure, 130 



