A DINOSAUR BURIED IN THE ROCK 39 



fossils were formed above those in which the Dino- 

 saur lay buried. 



If the earth had never changed in any way, no one 

 would ever have known that the mighty Dinosaur 

 was in this rocky tomb. But it happens that the 

 earth is ever changing, occasionally because of 

 violent earthquakes, and constantly through the 

 action of the waters that beat against the shores 

 and the effects of. rain and wind, heat and cold. 



So, as the ages passed, changes began to take 

 place in this lake. Such vast quantities of mud and 

 sand had been carried into it that the bottom rose 

 higher and higher until the water that once had been 

 so deep became very shallow. The land in all the 

 region round about was changing also, and ravines 

 were formed through which the water from the lake 

 ran in rivers. In this way all the water at last 

 disappeared, leaving the lake dry. And by this time, 

 through the upheaval and sinking of the land, the 

 bones of the Dinosaur which had lost its life in the 

 lake, millions of years before, lay buried in the solid 

 rock five thousand feet below the surface of the 

 earth. 



