INDEX 



495 



Trochilus colubris, nest and eggs, 



*221 



Trout, rainbow, *196 

 Triceratops, extinct, *284 

 Trypsin, 312 

 Tuberculosis, 380 

 Turdus ustulatus, *217 

 Turkeys, domesticated races, 271 

 Turtles, 205 

 Tylosaurus dyspelor, fossil skeleton, 



*278 



Typhoid fever, 380 

 Tyroglyphus siro, *165 



U 



Ungulata, 250 

 Urea, 317 

 Ureter, 350 

 Uvula, 304 



Valves of heart, of man, mitral, 318; 

 tri-cuspid, 319 



Veins, in human body, pulmonary, 

 320; portal, 314; vena cava as- 

 cending, 323; vena cava descend- 

 ing, 323; renal, 350; coronary, 

 320 



Veliger, 171 



Ventilation, 349 



Ventricle, of heart of man, 318, 319 



Venus mercenaries, 171 



Vermes, 143 



Vertebras, of human body, 331; cer- 

 vical, 331; lumbar, 331; sacrum, 

 331; coccyx, 331 



Vertebral column, 331 



Vertebrate, diagram of eye, *76 



Vertebrates, structure, 191 



Villi, of small intestine, 311 



Vinegar-eel, 146 



Viscera of abdomen and thorax, of 

 man, *309 



Vorticella, structure and behavior, 

 43; *42 



W 



Wapiti, *251 



Wasps, mimicked by moths, *448 



Water, as food nutrient, 295, 298; 

 boatman, *161; bugs, 160; moc- 

 casin, 212; strider, *158; tiger, 

 *160 



Whales, 249 



Wildcat, 256 



Wolf, Thibet, *262 



Wolves, 254 



Wood-lice, 154 



Worms, 143 



Yellow fever, caused by protozoan 



parasite, 130 

 Yellow-hammer, *231 



