INDEX. 



367 



Pain, 224 



Pangenesis, 46 



Parents and offspring, 181, 330 



Parents showing structural characters 



of divergent character, 107 

 Parker, Mr., and scarlatina, 235 n 

 Parthogenesis, 41 

 Parts, use and disuse of, 144 

 Pathology a branch of biology, 147 

 Physical E the physician's province, 



35 



Physique of the two sexes, contrast 



between, 251 

 Plants and the specific E, 158 

 Populations, stationary and increasing, 



254 

 Post-partem E, capable of producing 

 structural change, 138 

 potent as it acts early, 148 

 " Potential " normality, meaning of, 



297 

 Potentialities of disease, conversion of, 



into actualities, 117 

 Potentiality of S, 1 15, 344 

 Pranzini, execution of, 80 

 Precocity, 58 n 

 Premature birth, effect of, on child's 



future, 135 

 Prepotency, 75 



Procreative period, natural selection 

 and the, 264 

 termination of the, 268 

 Prodigies, intellectual, a list of, 262 

 Protoplasm, causation of the vital 



changes of, 11 

 Protoplasmic cell, 14 



of what it consists, 1 1 

 Prussic acid, 339 

 Puberty, causation of early, in woman, 



26971 

 Publican, the E of a, 227 



Q 



QUATREFAGES, 75 



R 



Race, the, modified by surgery, 286 

 Reason, defects of, as a guide, 195 

 first in full force, 195 



Reason, guiding voice of, 194 



has a far more difficult task than 



instinct, 197 

 influence of, on natural selection, 

 201 

 Recapitulation of Part I., 174 

 Relations of one animal to another, 31 

 Relative share of S aud E in causation 



of disease, table of, 164 

 Reproduction of species, methods of — 

 asexual, 40 

 by parthogenesis, 41 

 by "graft hybridism," 41 

 partial, 41 

 sexual, 41 



object of, 42 

 Reproductive power at its prime, 261 

 Reproductive organs, their influence 



on the emotions, 68 

 Resistance to disease, 300 

 Reversion, tendency of disease towards, 



97 



the two chief causes of, 104 

 bearing of, upon pathology, 118 

 to a remotely ancestral state, 

 109 



Reynolds, Dr. Russell, on causation of 

 disease, 172 



Rheumatic diathesis, 265 



Rhythmical habits, 50 

 organic changes, 51 



Rhythms, 49 



Rigorous E, definition of, 255 



S 



Sarcoma parasite, the, 358 

 Sarcomata, secondary, 346 

 Sarcomatous and carcinomatous tissue, 



nature of, 349 

 Salter, H., on the rhythm of asthma, 



56 

 Savory, Mr., on alcohol and tobacco, 



301 

 Sedentary scholar and active labourer, 



difference in E and S in, 32 

 Sedgewick, Mr., on " The Influence of 



Sex in limiting Hereditary Trans- 

 mission," 60 

 Selection, action of E independently 



of, 188 



