INDEX 



3 11 



Scolex of tapeworm, 27 

 Scolopendra, 78 

 Scorpions, 148 



sting, 82 



Scutigera forceps, 79 

 Scyphozoa, 16 

 Sea anemone, 16, 17 

 Sea cows, 274-75 



characteristics and habits, 274 

 Sea cucumber, 21-24 

 Sea eggs, 24 

 Sea lilies, 22, 25 

 Sea lion, 212 



Sea mussel, see Salt-water mussel. 

 Sea squirts, see Tunicates. 

 Sea urchin, 20, 22-24 



annual value, 24 

 Sea walnuts, 16 

 Sea weeds and oysters, 50 

 Seal cony skin, 222 



harem, 224 



rookeries, 224 



skins, 222 



price of, 227 

 Seals, 205, 212, 223 

 Seed oysters, 48 

 Segmented worms, 40 

 Sepia, 67 



Serpent stars, 22-25 

 Sewer rat, see Brown rat. 

 Shad, introduction into California, 115 



breeding habits, 115 



eggs produced, 115 



fry hatched by Bureau of Fisheries, 



US 



Shagreen from sharks, 113 

 Shark, dogfish, damage by, in 



basking, 112-13 



oil, 112 

 Sharks, no, in 



damage to fish and fisheries, no 



deaths from, no 



great white, no 



man-eating, no 



and rays as food, 112 



for production of gelatine, 112 



Sharks, size, no 



used for fertilizer, 112 

 Sheep, 264 



Karakul, 214-15 

 Sheep-scab, 83 



mite, 82 



Shell-fish as food of prehistoric man, 45 

 Ship of desert, 267 

 Shipworm, direction of burrow, 64 



food and rate of growth, 64 



life-history, 64 



method of boring, 66 



prevention of damage, 66 



size and fecundity, 64 



valve, 64 



Short-tailed mice, see Field mice. 

 Shrews, 205, 208, 209 

 Shrimps, 78 

 Silk, annual production of, in Japan, 104 



industry centres, 104 



origin of industry, 104 



production and cheap labor, 106 

 Silkworm, cocoon of, 104, 105 



habits, 104, 105 



introduction into Europe and 

 America, 104 



number of species, 104 

 Silver foxes, number in captivity, 220 



value of skins, 216 

 Sirenia, 274 



as food, 274 



skins for leather, 2 74 

 Sistrurus, 161-62 



miliaris, 162 

 Skins, market prices, 214 



misnamed, 222 



preparation of, 214 

 Skunk, 220-22 



and field mice, 251 



protection of, 223 



raising, 214 



skins, 213, 222 

 Sleeping sickness, 3, 4 



victim of, 4 

 Sloths, 260-61 



habits, 262 



