READING RIDDLES OF THE ROCKS 123 



having all the information we need. A great 

 part of the head, with its formidable looking 

 horns, is present, and although the nose is 

 gone, we know from other specimens that it, 

 too, was armed with a knob, or horn, and that 

 the skull ended in a beak, something like that 

 of a snapping turtle, though formed by a sep- 

 arate and extra bone ; similarly the end of the 

 lower jaw is lacking, but we may be pretty 

 certain that it ended in a beak, to match that 

 of the skull. The large leg-bones of our speci- 

 men are mostly represented, for these being 

 among the more solid parts of the skeleton 

 are more frequently preserved than any others, 

 and though some are from one side and some 

 from another, this matters not. If the hind 

 legs were disproportionately long it would in- 

 dicate that our animal often or habitually 

 walked erect, but as there is only difference 

 enough between the fore and hind limbs to 

 enable Triceratops to browse comfortably from 

 the ground we would naturally place him on 

 all fours, even were the skull not so large as to 

 make the creature too top-heavy for any other 

 mode of locomotion. Were the limbs very 



