INDEX. 



333 



Tardigrade, 185 



Taxonomy, 19 



Tendrils, 136 



Teratology, 96 



Terebratulina, 230 



Teredo, 223 



Tertiary rocks, 93 



Thallophytes, 56 



Thistle, 302 



Thompson, Vaughan, 213 



Thomson, Allen, 185, 190 



Thorns, 138 



Thysanura, 257 



Tillodontia, 152 



Time past, in relation to evolution, 367 



Topshell, 227 



Tornaria, 20 1 



Tortoise, 134 



Toxodonts, 152 



Tradescantia, 68 



Trias, 29 



Trilobites, 209 



Triton (see Newt) 



Trochus, 227 



Tube-worms, 231 



Tunicates, 54 



Types of animals, 39, 46, 47, 48, 51, 



55 

 Types of plants, 56 



u 



Umbel, 304 

 Unio, 224 

 Urochord, 175 



Velum, 223 et seq.> 229, 234 



Venus' flytrap, 22, 68 



Verbascum, 83 



Vertebral theory of skull, 125 et sej, 



Vertebrata, 39, 51, 53, 144 



Vertebrate embryos, 100 



Vetches, 137 



Vine, 137 



Virginia creeper, 137 



Visceral clefts (see Gill clefts) 



Vogt, 159 



Volvox, 278, 301 



Von Baer, 40, 100, 170, 171, 192, 220 



w 



Wallace, Mr. A. R., i, 6, 249, 250, 



251 



Wallace's line, 28, 30 

 Wallflower, 82, 131 

 Water flea, 32 (see also Cypris, 



Cyclops, and Daphnia) 

 Weismann, 242 et seq., 248, 249 

 Whale, 20, 21, 88, 102 

 Whalebone, 88 

 Wheel animalcules, 227, 360 

 Wing of bird, 155 

 Wings of insects, 265 et seq. 

 Wings, rudimentary, 85 et seq, 

 Wolff, 130, 183 

 Worms, 231, 233, 285 



Yeast plant, 58 



Vallisneria, 68, 326 

 Variation, 33 

 Varieties, 2, 4, 142 

 Vegetative repetition, 286 

 Veliger stage, 223, 227, 233, 234 



Zeuglodon, 89, 153 

 Zoea, 213, 214, 215 

 Zoology, 14 

 Zoophytes, 45, 281 

 Zoospores, 69 



