INDEX 



183 



Uranus, 171 

 Utah, 171 



Variability, 17 



Variations, 23 



Varieties, 34 



Vegetation, Carboniferous, 95 



Cenozoic, 88 



Mesozoic, 90 



Palaeozoic, 91 

 Vertebrata, 32 

 Vertebrates, ontogeny of, 63 



Palaeozoic, 91 

 Virginia, 84 



Vries, H. de, 23, 24, 26 

 Vvlpes, 32 



Waagen, 22, 23 

 Wagner, 21, 40, 41 

 Walcott, 85 

 Wallace, 13, 141 

 Walrus, 32, 130 

 Wapiti, 132 

 Wasps, 89 

 Water-fleas, 153 



Weasels, 32, 134 

 Weeds, European, 121 

 Weismann, 20, 21, 22, 153 

 West Indies, 127, 128 



mammals of, 143 

 Western hemisphere, 127, 136 

 Whale, 33 



nipper of, 42, 46, 47 



Greenland Right, 47, 67 

 Whales, blood of, 78 



development of, 69 



limbs of, 67 



toothed, 67 

 White Mts., 130 

 Wilson, 3, 26, 62 

 Wolf, 32 

 Wolverenes, 131 

 Wolves, 32, 123, 134, 140 

 Wonder of Peru, 159 

 Worms, embryo of, 68 



ontogeny of, 59, 65 

 Wrist-joint, 43 



Zarco, 37 

 Zebras, 99 



Printed in the United States of America 



