534 



INDEX 



Tsetse fly, 341, 342 

 Tube feet, 84 



Tuberculosis, 390, 391, 407 

 Tube worm, 81 

 Tunicate, 145, 478 

 Turbellaria, 78 

 Turtle, 120, 121, 367 

 Tympanic membrane, 213 

 Tyndall, 222 

 Typhlosole, 102 

 Typhoid, 390, 391, 407 



Ulna, 142, 144, 355 



Umbilical cord, 192, 193, 272 



Underwing moth, 326 



Undulant fever, 391 



Unguiculate, 129 



Ungulata, 129, 130, 352 



Unguligrade, 321 , 322 



Unicellular, 7, 28, 30-56; See: Pro- 

 tozoa and Bacteria 



Uniformitarian doctrine, 377, 471 



Uniparental, 57; See: Asexual 



United States National Museum, 387 



Unity of life, 6, 131, 351, 388, 424, 

 425, 445 



Urea, 37, 41, 181, 182, 192 



Ureter, 147, 149, 182, 185, 186, 190, 

 194 



Urethra, 148, 149, 182, 194 



Uric acid, 37, 181, 182 



Urinary bladder, 133, 146-149, 182, 

 185, 194 



Urine, 183, 186, 197 



Urogenital system, 159, 184, 193-195, 

 351, 358 



Urostyle, 141, 147 



Uterus, 184, 190-194, 252, 273, 399 



Uterus masculinus, 148 



Utriculus, 212, 213 



Vaccination, 343 



Vacuole, cell, 19; contractile, 10, 27, 



35, 55; gastric, 10, 35, 55 

 Vagina, 194 



Valve, 87, 88, 170, 173, 174, 176 

 Van Helmont, 218 

 Variability curve, 378, 379 

 Variation, 250, 261, 281-315, 374- 



385, 473-476 

 Varieties, 354 

 Vascular system, 169-179, 185, 186, 



192; See: Circulation 



Vas deferens, 194 



Vasomotor, center, 205; nerve, 177 



Vegetal pole, 267, 268 



Vein, 148, 158, 170-179, 185, 186 



Velum, 331 , 332 



Venous system, 170 



Ventral, ganglion, 201; nerve root, 



201, 207, 208 

 Ventricle, 170-/75 

 Vermiform appendix, 149, 152, 357 

 Vertebra, 138, 139, 142, 144, 146-149, 



357 

 Vertebral canal, 139, 141, 145, 149, 



353 

 Vertebral column, 111; See: Skel- 

 eton 

 Vertebral plate, 269 

 Vertebrate, 66, 111-131, 252, 253; 



body plan, 132-149, 185, 189, 353; 



characters, 112, 145; See: Mammal 



and Man 

 Vesalius, 450, 452, 459 

 Vestigial organs, 323, 357, 358, 362- 



364 

 Villus, 157, 208 

 Virginia opossum, 127, 128 

 Virus, 343, 393 

 Vitalism, 24, 227, 347, 385, 463, 



464 

 Vitamin, 23, 159, 160 

 Vitreous, chamber, 214-216; humor, 



215 

 Viviparous, 123 

 Vivisection, 449 

 Vocal cords, 162 

 Voice, 162 

 Volant, 322 



Voluntary muscle, 137, 138 

 Volvox, 58, 59, 67, 230-232, 477 

 Vomer, 141 

 Vorticella, 44 



Walking-stick insect, 327, 328 

 Wallaby, 128 

 Wallace, 475 

 Wasp, 327, 336, 415 

 Water, 21, 383 

 Water-flea, 80, 91 

 Water-vascular system, 84 

 Wealth, 389 

 Weasel, 326 



Web of life, 43, 91, 335, 336, 386, 388, 

 394, 415, 420 



