H 4 EXTINCT MONSTERS. 



as large ! So this anomalous monster had two sets of brains, one 

 in its skull, and the other in the region of its haunches ! and 

 the latter, in directing the movements of the huge hind limbs and 



2 



(J 



FIG. 27. Limb-bones of Stegosaurus. (After Marsh.) 

 I. Fore leg. 2. Hind leg. 



tail, did a large share of the work. The subject is a highly sug- 

 gestive one, but at present requires further explanation. 



On the walls of the fossil reptile gallery at South Kensington 



