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 
114 
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 
