THE MIGHTY DINOSAURS 17 



were so short they could walk only on their hind 

 legs, like the kangaroo. Some were reptile-footed; 

 others had feet like birds. But the men who have 

 made a study of their bones have classed them all 

 with the reptiles although they looked no more 

 like the reptiles of to-day than an elephant looks 

 like a canary bird. 



Wonderful, indeed, must the world have ap- 

 peared when the Dinosaurs were alive ! Some 

 of them were sixteen feet high and eighty feet 

 long. Although these huge ones walked on all 

 fours, they occasionally raised themselves up on 

 hind legs and tail, and when in this position their 

 heads must have been fully forty-five feet above 

 the ground. Did a plant-eater see some sweet, ten- 

 der leaves at the top of a big tree? Then, if he 

 was hungry, all he had to do was to sit up on his 

 hind legs, rear his head, and pluck off the tooth- 

 some bit. Or did he suspect that an enemy was 

 approaching? Instead of depending on ears and 

 smell alone to detect the foe while still at a dis- 

 tance, he could rear up and take a look at the sur- 

 rounding country. Had there been any houses in 



MTGHTY ANIMALS — 2 



