INDEX. 



Acquired characters, definition of, 

 p. 5 ; inheritance of, 6, 15, 49, 57, 

 60, 67, 69, 71, 81, 83^84, 93- 

 96, 104, 107, 110-111, 127, 

 173, et seq. ; Galton on inheri- 

 tance of, 62, 106. 



Adaptive development, Weismann 

 on, 19. 



Algae, De Vries on the chromato- 

 phores of, 83, ill. 



Amphigony, the cause of indi- 

 vidual hereditary variation, 91, 

 100-101. 



Amphimixis, see Sexual propaga- 

 tion. 



Ancestral germ- plasm, 123. 



Atavism, 3, 91, 105. 



B. 



« 



Bary, De, on Weismann's theory, 



152. 

 Basidiomycetes, 90. 

 Begonia, regeneration in, 4, 52. 

 Biophores, 123. 

 Body-cells, and germ-cells, 29. 

 Brooks, theory of heredity, 2. 

 Bud-variation, 90, 94, 96, 98-99 ; 



Weismann on, 95, 97, 161 ; 



Fritz Muller on, 95. 

 Butterflies, climatic varieties of 



and Weismann's theory, 67- 



68, 127-128. 



C. 



Candolle, De, on inheritance of 

 acquired characters in plants, 1,3. 



" Carriers of Heredity," 32, 38, 

 70, 78, 122. 



Cessation of Selection, see Pan- 

 mixia. 



Chromatophores, of Algae, 83, 1 1 1 . 



Compositae, pollen of, 5. 



Congenital variations, definition 

 of, 5; inheritance of, 6, 110; 

 sexual propagation the cause 

 of, 11 ; Darwin on, 13; origin 

 of, 23, 25, 100, 102; nutritive 

 congenital changes, 64 ; exam- 

 ples of, 64 ; specialized con- 

 genital changes, 6$ ; representa- 

 tive congenital changes, 65 ; 



. Galton on, 134. 



Continuity of germ-plasm, see 

 Germ plasm. 



Crustacea, and the inheritance of 

 acquired characters, 94. 



Cuttings, and bud-variation, 98. 



Cytisus adami, grafting of, 127. 



D. 



Darwin, Charles, and Pangenesis, 

 2, 26; arguments in favour of 

 pangenesis, 3, 59 ; on the cause 

 of congenital variations, 13 ; 

 comparison of his theory of 

 heredity with that of Weis- 

 mann, 52, 55, 73, 92, 105- 

 106, 115, 133, 173 et seq.; on 

 germ and somatic-cells, 76 ; on 

 the influence of pollen upon 

 somatic tissues, 79-80 ; on graft- 

 hybridization, 83 ; on bud- 

 variation, 95 ; on the causes of 

 variation, 102, 161 ; on the 

 inheritance of acquired charac- 

 ters, 107, 111— 112; on Xenia, 

 144 ; on sexual union, 154. 



