INDEX 



269 



SAUERMANN, on food in its relations to 

 colour, 57 



SAUNTER (GASPARD DE), 159 



Scent of flowers, variation, 102 



SCHMANKEWITSCH, on differences in- 

 duced in Daphnia rectirostris by 

 mode of life, 213 ; on Branchipus 

 ferox, 216 ; on Artei/tia and Bran- 

 chipus, 217 



SCHMIEDEBERG, . on the action of 

 caffein on green and brown frog, 

 JSi-iSS 



SCHUBELER, on seeds of same species 

 obtained under different climates, 

 218 



Scilla maritiina, 142 



Sea-shore, influence on plants, 211 



Sea-urchins, development of their 

 larvae in decalcified sea-water, 195 



Sea-water fatal to most but not all 

 fresh-water organisms, 186 ; influence 

 on plants, 211 



Seeds, physiological variability, 137- 

 139 ; influenced by environment, 218 



Selection, natural, a factor in evolu- 

 tion, 230 ; sexual, 230 ; physio- 

 logical, 230; Weismann on, 231; 

 experiments on, 236 ; proposed ex- 

 periments, 240 



Selection, Naudin on, 21 ; produces 

 most new forms when not subservient 

 to man's utilitarian demands, 168 ; 

 of carrots, 203 ; proposed experi- 

 ments, 241 



SEMPER (K.), on dimensional varia- 

 tions, 79, 200; on environment, 179, 



221 



Serratula tinctoria, 95 



Sexuality, variation, 107 ; influence of 

 food, 107 ; variation in plants, 107 ; 

 variation in human species and ani- 

 mals, 107 ; proportion of males to 

 females among domestic animals, 

 108 ; and parasitism, 108 ; and muti- 

 lations, 108 ; and food, 109 ; and 

 climate, 109 ; and external factors, 

 109, no ; sexes, proportion of males 

 and females in different animals, 

 108 ; and dwarfing, 200 



Sheep, Mauchamp breed, 239 ; colour 

 and flesh, 68 ; colour and climate, 

 69 ; from Senegal acquiring wool 

 under northern climates, 89 ; chemi- 

 cal differences in skeleton of differ- 

 ent breeds, 116; Mauchamp breed 

 suddenly produced, 154; variability 

 in length of gestation of different 

 breeds, 167 



Shell, left-handed, due to electrical in- 

 fluences, 204 



Skull-capacity of wild and domestic 

 forms, 165 



Stnerinthus, colour-variation, 51 



Soil, influence on taste of wine, 219 



Solanum stoloniferum, 236 



SPALLANZANI on sexuality, 108 



Special creation theory, 7, 22 



Species, different, react differently to- 

 wards same poisons, 141 ; what are, 

 144, 254 ; all variable, 148 ; selec- 

 tion, 203 



Specific characters not merely external 

 and morphological, but chemical and 

 physiological, 143 



SPENCER (HERBERT), on evolutionists' 

 and anti-evolutionists' demands, 24 ; 

 on dimensional variations, 79, 200 



Sphinx elpenor, colour- variation, 51 



Spinacia oleracea, proportions of 

 sexes, 107 ; sexuality, 108 



Starving, experiments on, 77 



STELLA (ERASMUS), 158 



Sterility of dwarfecl plants, 75 



Stilbe americana and A bramis versi- 

 color identical, 90 



Stomach, variability, 105 



Stomata in aquatic and aerial indi- 

 viduals of same species, 208, 209 



STRABO, 73, 158 



Stratiotes aloides, influence of mode 

 of life on leaves, 209 



Strychnine, influence on common crab, 

 120 



STUDER, on molluscs living in warm 

 water, 205 



STURTEVANT, on the origin of culti- 

 vated plants, 179 



Sus vittatus, 158 



SWAMMERDAM, on experimental tera- 

 togeny, 194 



Syphilis, 124 



T. 



Tadpoles, influence of food on sexua- 

 lity, 107 ; experiments on the influ- 

 ence of salt, 189 ; influence of food, 

 199 ; embryology, 33 



Taraxacum dens-leonis and palustre, 

 95 



TARCHANOFF (JEAN DE), on the brain 

 of young animals, 145 



Teeth of whales, 35 ; variation in num- 

 ber, 103 



Tellina transferred to fresh water, 

 1 86 



Temperature and life, 205 



"Tendency to betterment," Delbceuf's, 



i5 2 



Teratogeny, experimental, 193 

 TERQUEM, on Foraminifera, 27 

 TESTUT, on muscular anomalies in 



man and their interpretation, 37 105 

 Tetragonia, 236 

 Thalassema mellita, 197 

 THEOPHRASTUS, on varieties of Bras- 



sica oleracea, 177 



