THE MIGHTY DINOSAURS 



There was a time when the whole world was 

 ruled by mighty animals many of which were of 

 gigantic size and quite unlike the animals of- to-day. 

 For thousands of centuries they were the monarchs 

 of the land, the water, and the air, and nearly all 

 of them died long before any human being had 

 lived. 



But, although the most wonderful among these 

 animals disappeared millions of years before there 

 were any people in the world, we know how some 

 of them looked, where they made their homes, what 

 they ate, and, in some cases, how they died. It is 

 because their bones have been found that so much 

 is known about them. These bones are all buried 

 in rocks, and there are men who spend their time 

 searching for these rocks that they may dig out 

 the bones and study them. In this way much 

 has been learned concerning these creatures which 

 once were the rulers of the world. And among 



15 



