52. THE STRUCTURE AND LIFE OF BIRDS cH.Iv 
fused with the tibia, the stronger of the two leg bones. 
All species seem to have been tending towards this 
birdlike fusion. The pelvis is very like that of birds 
in its form and in its strength. The ilium extends 
far in front of and behind the thigh joint, and the two 
other pelvic bones, the ischium and pubis, extend 
downwards and backwards. If the pelvis of a dino- 
saur and an emeu be put side by side, the resemblance 
is most striking. 
Had the pterodactyl had the legs and hind-quarters 
of the dinosaur, it would have been still more birdlike 
than it is. 
SOME OF THE LITERATURE OF THE SUBJECT. 
Besides books mentioned at the end of Chapter II, a number 
of papers by Professor H. G. Seeley, Hutchinson’s Extinct 
Monsters, and Huxley’s Vertebrate Anatomy. 
