DRAGONS OF OLD TIME 



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generation with fuller knowledge derived from first evidence. 

 We insert here an illustration (see Fig. 40) in which are shown, 

 side by side, the limb-bones and those of the region of the pelvis 

 in a crocodile, a dinosaur, and a bird. (The middle drawing is 

 not complete and the leg of the crocodile should be more bent.) 

 Professor Marsh has described some remains of certain small 

 and slender little Dinosaurs (Hallopus) about the size of a fowl, 

 which, from the construction of their feet, he believes were 



FIG. 40. Hind limbs of (A) Bird, (B) Dinosaur, and (c) Crocodile. 



capable of jumping. It is a question not yet decided whether 

 Dinosaurs laid eggs. 



The late Sir Eichard Owen, in his great work on British Fossil 

 Reptiles, made some valuable remarks on the probable habits of 

 Dinosaurs, which deserve careful attention. He points out that 

 actual observation of a swimming crocodile testifies to the fact 

 that the fore-limbs are laid flat and motionless upon the sides of 

 the chest. Their chief swimming organ is, of course, the tail, 

 which is both long and powerful, and, in some forms, is flattened 

 in a vertical direction. Most of the Dinosaurs at present known 

 have the crocodilian swimming organ ; and some, such as the 



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