2 4 2 



SECRETS OF EARTH AND SEA 



Piette, Edouard, his excavations of 



caves, I 



Pigs and the paint-root, 119, 145 

 Pimpernel, red and blue, will not 



inter-breed, 145 

 Pine ornament of Indian shawls, 



210 



Pleistocene, a small fraction of earth's 



crust, 42 



series or system, 38, 39 

 Pliny the elder at Vesuvius, 58 

 Pocahontes, the Algonkian princess, 



153 



Prehistoric men, art of, 35-54 

 successive ages of, 36-39 

 Printings from engraved cylinders, 



II, 16, 17 



Race, pride of, 150, 152, 153 

 Racehorse, English thoroughbred, 



history of, 147 

 Races, nature of, 

 luce 



140 



, M3 

 rels by 



produce mongrels by cross-breeding, 



Reindeer, cave-man's engraving of, 46 

 period, 7 



Restoration of the Lortet picture of 

 the Three Deer, 13 



Rhinoceros drawn on wall of a cavern, 

 46 



Rice, polished, the story of, and the 

 disease beri-beri, 234 



Rock-oil, 225 



Romanes, Dr. George, his experi- 

 ments on the suspended anima- 

 tion of seeds, 184 



Rotifer, the common, or wheel ani- 

 malcule, 159 



Scandinavian silver work showing 



swastikas, 196 

 Schliemann, fragment of pottery 



found by, in Tiryns, 23 

 swastikas discovered by, at His- 



sarlik, 193 



Scurvy, description of, 229 

 Seeds, frozen, survive, 177 

 Simplification of decorative designs 



(figures of), 206 

 Smoke nuisance, London citizen exe 



cuted for producing it in 1306 



217 

 Sparrows, variations in, 118 



pecies, an attempt to estimate their 



number, 129 

 in the making, 108 

 Latin names for, why used, 96 

 not a convention, but a naturally 

 limited group of individuals, 

 . 100 

 not the same as a variety or a race, 



101 



of common English plants, 98 

 of crayfish, 120 

 types or type-specimens of, 96 

 what the word means, 91-99 

 Specific characters, 118-130 

 Spencer, Herbert, on life, 183 

 Spirals carved on mammoth ivory, 54 

 Statuette of a man, 53 

 St. Germain, museum of, I, II, 45 

 Stork theory of the swastika, 207 

 Strata of the earth's crust, thickness 



of, 40, 41 



Streptocone, the bent cone or comma- 

 like figure forming half a 

 Tomoye, 215, 216 



Sulphuric acid, weight of poisonous, 

 annually discharged over 

 London, 218 

 Sun-fish, 130 

 Survival value, 124, 125 

 Suspended animation, 173-190 

 Swastika, mode of forming a, in India, 



199 



on a piece of painted pottery from 

 Tiryns, figure of, associated 

 with horse and fish, 23 

 possible derivation from a doubled 



Tomoye, 210 



related to the tetraskelion, with 

 four curved arms, shown in 

 Fig. 58, 212 

 the, 191-208 



Tapirs, the two living species of, 109 

 Temperature, measurement of, 174 

 Thoroughbred English racehorse a 



mongrel, 147 

 Tiger, sabre-toothed, 9 

 Time, estimate of, in geology, 43 

 Tinning of vegetables destroys their 



anti-scorbutic value, 235 

 Tiryns, fragment of pottery from 



(date 800 B.C.), and having 



swastika and horse and fish, 23 



