SUBJECT INDEX. 



Ml 



Vermis, 404 

 Vermetxis, 366 

 ]'crmil!ii, 323 

 Vertebrates, cranial, 89 

 VesjHi, 260 

 A'oice-organs, 360 

 VoUita, 450 

 Vortex riridiii, 81 

 VortkeUir, 28, 29, 249, 247, 296, 375, 



377, 407 



Waldliehtua, 276 

 Water-vascular systems, 35, 187, 223, 



240. 243 

 Web- spinning, objects of, 99 



Wheel-animalcules, 35 

 Worms, blood of, 153 



Xanthine, 14 



Xanthophyll, 132, 134, 135, 163, 165 

 Xanthoproteic acid, 101 

 Xlphosura, 50, 63 



" Yellow cells," 80, 81, 215-219 



ZOANTHODEMES, 33 



Zoophytes, 234 

 Ziiipwna, 433 

 Zijiincma, 12 



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