Index 



315 



Preston, John, pedigree of, 304 

 Price, H. L., work of, 125 

 Pringsheim, N., work of, 203 

 Protoplast, 24 

 Punnett, R. C, work of, 66 



Reeve, Sarah Tapping, pedigree of, 301 



Reichert, work of, 224 



Reproduction, power of, 23; sexual, 29; 



by spores, 29 

 Richardson, Ann, pedigree of, 302 

 Riley, C. V., work of, 65 

 Russo, work of, 65 



St. Hilaire, Geoffrey, work of, 9 



Saltation, 171 



Schenk, work of, 65 



Sedgwick, Catherine ^laria, pedigree of, 



302 

 Selection, 118, 131 

 Semper\dvum, work with, 204 

 Sex, and heredity, 62; immorality, 285 

 Shamel, A. D., work of, 124 

 Skeleton, inherited characters of, 277 

 Soil, 120 



Sparks, Jared, pedigree of, 301 

 Sperm, 31, 45 

 Sporophyte, 34 



Stoughton, Abigail, pedigree of, 302 

 Sumner, F. B., work of, 210, 212 

 Swimming spores, 29 

 Synthesis of a mutating race, 182 



Talcott, Mary, pedigree of, 301 

 Thomsen's disease, 278 

 Tobacco, work with, 114 

 Tower, William Lawrence, 141 

 Treat, Mar>% work of, 65 



Tschcrmak, E., work of, 41 

 Tuttle, Elizabeth, pedigree of, 300 

 Tyler, Daniel, pedigree of, 301 



Unit-character, 48 

 Use and disuse, 10 



Variation, germinal, in animals, 210; 

 in Chrysomelid beetles, 213; by com- 

 bined selection and hybridization, 

 234; by different forces, 200; by 

 hybridization, 231; origin of, 144; 

 peripheral origin of, 143; in plants, 

 202; by selection, 238; somatic, 



145 

 Vilmorin, P., work of, 84 

 Vincent, Marvin Richardson, pedigree 



of, 302 

 Virginia and eugenics, 295; first 



families, of 303 

 Von Riimker, work of, 125 



Waite, Morrison, pedigree of, 302 

 Washington, George, pedigree of, 304 

 Webber, H., work of, 125, 128 

 Weismann, A., work of, 41, no, 168 

 Whitney, Henrietta Frances, pedigree 



of, 302 

 Wilson, E. B., work of, 47 

 Woltereck, work of, 210 

 Woolsey, Theodore Dwight, pedigree 



of, 301 



Yeasts, work with, 202 



Zedebauer, E., work of, 203 

 Zoospore, 29 

 Zygote, 30, 62 



