INDEX 



421 



Plasmogen, formation of, 190-192 

 Pleistocene period, discovery of re- 

 mains belonging to, 383, 

 385. 386 

 skeletons, found in caverns of 



Mentone, 398-399 

 epochs, table of, 384 bis 

 Pliocene period, discovery of remains 



belonging to, 386, 388 

 distinctions between Pleistocene 



and, 386-387 

 Poisonous animals, 101 

 fish, 103 

 insects, 102 

 plants, 92, 100, 104 

 Poisons, distinctions between gut- 

 poisons and wound-poisons, 

 106-107 



immunity from wound-poisons, 

 method of producing, 107, 

 108 



Poppies, cultivated variety from 

 which opium manufactured, 



3.63 

 ition 



cultivation of, in remote ages, 364, 



365 . 

 earliest cultivation of, for oil, 363, 



364 



English varieties of, 363 

 opium, introduction from Europe 



into Far East of, 363-365 

 origin of medicinal uses of, 364, 365 

 Population, increased, due to higher 



birth-rate amongst poorer 



classes, 279, 285, 286 

 Post - Tertiaries (or Quaternary), 



gravel and cave - deposits 



termed, 83 

 Proteids, building up of, in plants, 



204, 205 

 cell-protoplasm consisting of, 189, 



190 



chemical composition of, 188, 189 

 " Proteus," definition of term as 



applied to unicellular 



animals, 193, 194 



Protoplasm, chemical elements con- 

 tained in, 187 

 death caused by destruction of, 



183-185 



active life of, 182-184, 328 

 explanation of term, 170-172, 328 



Quaternary (Post-Tertiaries), 384 bis 



Reindeer age, 384 bis 

 Reindeer men (or Cromagnards), 

 artistic work of, 383, 390, 

 391, 393 



brain cavity of, comparable with 

 modern European, 388, 390 



customs of, 391, 393 



skulls and skeletons of, found in 



cave-deposits, 391, 393 

 Rhus toxicodendron, American poison- 

 vine or, poisonous nature of, 

 92 



case of poisoning by, recorded in 

 The Spectator, 96 



differences and resemblances 

 between Virginian creeper, 

 Veitchii, and, 93 



individual susceptibility to poison 

 of, 94, 96, 102 



painful malady produced in 

 certain persons by poison of, 

 91, 92 



recognition in United States and 

 Japan of danger of, 92, 98 



results of examination in 

 laboratory at University of 

 Harvard (Mass. ), with re- 

 gard to, 94 



similarity between poisonous pro- 

 perties of Chinese prim- 

 rose and, 104 



specimens at Kew Gardens, 93, 

 94 



use in Japan, 92 



Riviera, cultivated trees and plants 

 of, 47-49 



flowers for sale, cultivated in, 56, 57 



green tree-frog of, 49, 50, 52, 55 



meteorological conditions of, 46 



primitive vegetation of, 46, 47 



tree-frog, blue variety of, 50, 52, 



53, 55, 56 



vegetation of, influence of man 

 upon, 57 



Salamanders, European species, 



various, 218 

 Mexican, various species of, 215, 



216 

 Sanitation, active development in 



Great Britain, cholera panic 



as affecting, 239 

 Schliemann, discovery of Troy and 



Mycenae by, 16 



