INDEX 



11 



Trap-like device of Venus's 



fly-trap 39] 



Tree cricket, incomplete meta- 

 morphosis <>| (fig.) ... 17 



harm !ul insect 22 



Tree frog (fig.) 126 



Tree killed by bracket fun- 

 gus (fig.) 369 



Tree sparrow at bread crumb 



station Ms 



at suet station Ms 



Trees, habitat of lichens . . . 360 



life processes of 259 



Tremex borer, harmful insect • 40 

 Triangular flaps, mouth of 



clam «x; 



Trichina, discussed 77 



Trichinella, discussed (fig.) . 77. 7^ 



Trichinosis, cause of ... . 7H 



Trichocysts of paramoecium 60 



Tropical vegetation (fig.) . . 4< >1 



Tropics, as a habitat .... 161 



home of epiphytes 399 



Trout, example of fish .... »i 



bony fish 106 



True flowering plants . . . 323 



Trunk region of flsh . . . . l<x; 



Trunks of evergreens . . . :;77 

 Tsetse fly, sleeping sickness 



spread by 239 



Tubercles, on roots of bean 



family 270 



Tuberculin test, for cows . . 349 



invented by Koch 361 



Tuberculosis, a bacterial dis- 

 ease 197 



cure, summer (fig.) .... 236 



winter (fig.) 237 



discussed 236 



in cows 349 



of throat and other organs . . 237 



persons affected 240 



Tubular appendages of male 



crayfish ^7 



Tubules, of kidney 207 



Turgid cells J7."> 



Turnip, member of mustard 



family 



storage of food in 283 



Value of as food 178 



an to /""/' s 



Turpentine, source of ... . 



Turtle, example ol Reptllia 7. 129 



green, use of as 1 1 . 13] 



skeleton of 190 



Turtles, discussed 130 



Twining petiole, of clemal 

 (fig.) . . ... 



Ol nast urt mm (fig.) . 



Twining plants, direction of 

 curve of 



Twining stem of dodder 

 (fig.) 



Twining stems 



Two-parted flower of mint 



(fig.) 



Tympanic cavity 



Tympanic membrane . . 

 Types, of mosses I fig. I . . 



of twigs (fig.) 



Typhoid fever, a bacterial <li: 



ease 



spread by carriers 



Typical fern, pteris .... 

 Typical flowering plant, bean 

 a 



U 



Ulmus americana 7 



Umbel 



Umbrella-shaped branches 



of marchantia 



Underground stems, de-crih.. I 



examples ol 



of pteris 



Undissolved food 17} 



Unhealthy cows, milk tr.'in 

 Unicellular fundus. yeasl an 





example 



Univalves 



Universal stimuli of plants 



Unusual plants 



Unwashed hands, number <>f 



bacteria on 



Ureter, of frog 1 17 



ol man 2tfi 



Urethra, of man 



Urine, defined • 308 



Urinary bladder of frog 117 



Useful birds. .\. in.. Ml 



