180 ROY L. MOODIE 
iH 
Fig. 19 Dorsal view of the brain cast of Tyrannosaurus rex. X The 
skull to which this brain belonged was approximately four feet in length. Cour- 
tesy of Professor Osborn. 
cer., cerebral hemisphere Olf.t., olfactory tract 
h! and h?, prolongations of dura mater Op.l., optic lobe 
Olf.bulb., olfactory bulb IV, V, VII, Vill, XI-TX, XI, cranial 
Olf.l., olfactory lobe nerve roots 
