268 



INDEX 



PIKE, on deformation of Planorbis 

 by life in a pond containing a super- 

 abundance of plants, 207 



Pisidium pulchellum and cinerenm 

 varieties of same species, 94 



Planorbis of Steinheim, 27, 149 ; 

 living in sea-water, 185 ; deformed 

 by superabundance of plants, 207 



Plants, wild and cultivated, types of, 

 173 ; De Candolle's investigations 

 on, 173 ; list of cultivated species of, 



174 



PLATEAU, on adaptation to salinity, 

 190 



PLINY, 158 ; on varieties of Brassica 

 oleracea,) 177 ; on mutilation of 

 grape-vine, 220 



Poisons, physiological variability as 

 concerns their effects, 139 



POLO (MARCO), 159 



POLYBIUS, 73 



Polygonum amphibium, morphologi- 

 cal variations, 98, 209 



Polygonum fagopyrum, 142 



Pompiliis UHifasciatus, 120 



Portunns puber transferred to fresh 

 water, 188 



POUCHET (G.), on osteological varia- 

 bility, 104 



POUCHET and BEAUREGARD, on osteo- 

 logical variability, 104 



POUCHET and CHABRY, on the influ- 

 ence of decalcification of sea-water 

 on the development of larvae of sea- 

 urchins, 195 



POULIN (M.), on sudden variation, 

 i53 



POULTON (E B ), on the influence of 

 the colour of environment, 58 ; on 

 heredity, 225 ; on heredity of ab- 

 normalities, 255 



PRANTL, on food and sexuality, 108 



Pressure, its influence on life, 191 



PREVOST (J. L.), on the influence of 

 veratrin on green and brown frog, 

 131 



Prismatocarpus speculum, 91 



PRJEVALSKY, 159 



Proteus anguineus, neotenia, 112 



Py ralis zntis, colour-variation, 51 



Pyridin, influence on green and brown 



frog, 132 



Q. 



Quagga, mated with a mare, 248 

 QUATREFAGES (DE), on dimensional 



variations, 72 

 Quercus tosa toxic for Southdowns, not 



injurious for Pyrenean sheep, 141 

 Quercy phosphorites, fauna of, 150 

 QUETELET, on thechemical differences 



of the blood of man and woman, 122 



K 



Rabbits, dwarfed, 74 



Rana esculenta, and tcmporaria, 



principal physiological differences, 



130 

 Ranunculus, different forms according 



to environment, 95 ; forms of leaves, 



97 ; R aquatilisa.n& hederaceus, 97 ; 



differences according to aerial and 



aquatic mode of life, 208 ; R. sylva- 



ticus, 55 ; R.Jicarla, 142 

 RAULIN ( JULES), on the influence of 



very slight chemical changes on the 



life of Aspergillus niger, 182 

 REGELSPERGER (G.), on deformation 



in molluscs by living in warm waters, 



205 

 RFGNARD (P.), on the influence of 



pressure on life, 191 

 Reptiles, evolution of circulatory appa- 



ratus, 33 

 Rhododendron ferriigineum, form of 



R. hirsutuin, 219 

 Rhns corlaria, 142 

 Ribs, variation of number, 103 

 RITZEMA Bos, on peculiar characters 



of Tylenchi having fed only on one 



species of plants, 206 

 ROBINET(B. J.), on evolution, 16 

 ROMANES (G. J.)> 



ments, 250, 259 



on propose exper- 



, 

 d e 



Roots, influence of the soil on their 



growth, 204 

 Rosa alpina, 55 

 Rose carrying white and pink flowers, 



60 



ROSSLIN, 158 



ROUJON (A.), on dwarfed plants, 75 

 ROUSSEAU (J. J.), on meditation, 4 

 Rubus, variation, 97 

 Rumex, sexuality, 108 



S. 



Saccnlina, development shows its real 



systematic position, 30 

 Sagartia parasitica transferred to 



fresh water, 187 

 Sagittaria, leaf- variation, 97 

 SAINT GEORGE MIVART, on variability 



in the number of ribs, 103 

 SAINT HILAIRE, GEOFFROY, 19, 43 

 SAINT HILAIRE, ISIDORE GEOFFROY, 



SAINT LAGER, on special forms of some 

 plants due to the chemical nature of 

 the soil, 219 



SAINTE CLAIRE DEVILLE, on chemical 

 variability, 116 



Salainandra atra, neotenia, 112 



Salinity, adaptation to, 189 



Salmon, chemical analyses of, 117 



