248 INDEX 



Giant Sloth, tracks at Carson City, 46 

 Gilfort, Robert, 157 

 Great Auk, extermination of, 232 

 Grouse on Scotch moors, 235 



Hawkins, B. W., restorations by, 137 

 Hesperornis, description of, 80 

 impressions of feathers, 132 

 position of legs, 83, 84 

 restoration of, 82* 

 Hippotherium, 166, 167 

 Hoactzin, habits of, 74, 15*/ 

 Horn does not petrify, 130 

 Horse, abundant in Pleistocene time, 164 



books on, 176 



of bronze age, 163, 167 



collections of fossil, 176 



development of, 167, 168,* 175 



differences between fossil and living, 163 



early domestication, 165 



evidence as to genealogy, 170-173 



extra-toed, 172, 173 



found in South America in 1530, 165 



of Julius Caesar, 172 



none found wild in historic times, 165 



Pliocene, 166 



possibility of existence in America up to the time 

 of its discovery, 169, 170 



primitive, 160, 161* 



