INDEX 



307 



Opossum, 206, 207 



and field mice, 251 



skins, 213, 221 

 Orang-utan, 262 

 Orca orca, see Killer whale. 

 Oriental dysentery, 2 

 Ornithorhynchus, 206 

 Osculum of sponge, 1 1 

 Osier, Sir Wm., 27 

 Ostrich, eggs, 182-83 



farms, 184 



farming methods, 184 



food, 182 



as food, 184 



habitat and size, 180, 181 



habits, 182 



method of plucking, 183 



mode of capture, 182 



plumage, 183 



profits of raising, 183 



size and food of young, 184 



value of farms, 183 

 of pair, 183 

 of plumes, 184 

 Otter, 172, 219-20 

 Owl, barn, 192 



as destroyer of rodent pests, 191- 

 92 



and field mice, 250-51 



great horned, food of, 192 



screech, 192 

 Ox warble, 91 

 Oyster, absence of diseases, 50 



abundance, 45 



age at maturity, 47 



anatomy, 46 



artificial fertilization, 47 



beds, 48 



collection, 50 



conservation, 47 



culture, 47 



depths for collecting, 51 



and disease germs, 47, 51, 52 



dredge, 50-52 



drills, 50 



effect of floating, 53 



Oyster, enemies, 50 

 European, 47 

 floated, 53 

 food of, 47 

 legislation, 50-52 

 life-history, 47 

 number of eggs, 47 

 and sewage contamination, 52 

 shipment, 52, 53 

 survey of beds, 48 

 tongs, 50, 51 

 on trees, 51 

 and typhoid fever, 52 

 various beds, 45 

 virginiana, 45 

 wild crop, 45 

 young, 49 



Palaemon, 78 



Palinurus interruptus, 74 



vulgaris, 74, see Spiny lobster. 

 Pallets of shipworm, 66 

 Panama Canal, health of, 9, 10 

 Paramecium, 10 

 Passenger pigeon, extermination of, 



184-85 

 Pearl, 60 



buttons, 62, 63 



divers, 62 



in edible oysters, 61 



fisheries, 61, 62 



formation of, 60-6 1 



mussels, 62 



oysters, 61 



value, 6 1 

 Pecten irradians, see Scallop 



tenuicostata, see Scallop. 

 Pelagic sealing, 224 



prohibited, 226 



why so destructive, 226 

 Pelecypoda, see Lamellibranchiata 

 Peludo, 261 

 Penguins, 180 

 Peripatus, 69-70 

 Periphylla hyacinthiana, 16 



