242 



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, 



'5.3 



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, 143 

 produce mongrels by cross-breeding, 

 140 



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, 1 84 



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 design 

 (figures of), 206 



Smoke nuisance, London citizen exe- 

 cuted for producing it in 1306, 

 217 



Sparrows, variations in, 118 



Species, 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, 



IOO 

 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, n, 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 



