200 INDEX 



Horse, sketched by primitive man, 134 



teeth of, 139 



three-toed, 138 

 Humming-bird, exterminated by hurricane, 181 

 Hydrarchus, 44 



Ichthyosaurs, silhouettes of, 109 

 Ichthyosaurus, 32*-35 

 Iguanodons, found at Bernissart, 90 

 Impressions of feathers, 109, 111 



of scales, 109 



of skin, 109 

 Inbreeding, effects of, 182 

 Information, sources of, ix 

 Innuits, habits, 154 



Interdependence of animals and plants, 183-186 

 Ivory, fossil, 1, 3, 152 



Jaw of Mosasaur, 37, 39* 

 of reptiles, 37 

 of fossil shark, 46* 



Killing of the Mammoth, story, 145, 155 

 Kimmswick, deposit of Mastodon bones, 166 

 Knight, Charles R., restorations by, 113 

 Koch's Hydrarchus, 44 

 Missourium, 164,* 165 



Leaves, impressions of, 2, 8 



Leg of Brontornis, 123 



Leg of the Great Brontosaurus, 85 



of Giant Moa, 117* 



position in Hesperornis, 60 



position in ducks, 60 

 Lenape Stone, 171, 174* 



