The next showing progress, \v;is ;i small <-;it called dinicis eyclops 

 about the size of :i Canada lynx and it had a saber-tooth long enough 

 to reach to the inferior surface of the lower jaw, but instead of 

 passing downward outside the lower jaw, it pressed down into a 

 deep socket, specially developed to receive it. 



Then came a small cat, found in Oregon, having ;i saber the 

 shape and size of a shark's tooth, flat, broad at the base, serrated 

 and coming quickly to a point. This was doubtless deciduous, as are 

 the milk canines of our specimen, Figure ii. Another from this region 



Figure 6. 



of which only a skull is known, was a tigei'-like cat approaching the 

 size of our living types, and presented a saber which passed outside 



of the lower jaw as in 0111s, but the sabers were nut nearly so long, 

 reaching only to the inferior surface of the mandibles, while in ours 

 they reach as much as three inches below. 



Another species presents a more powerful saber-tooth, but with 

 no increased strength of the claws and limbs. Following this was 

 a cat aliout the size of the red lynx, which had keen cutting edged 

 canines, and strongly compressed. After this series of types the true 

 cats appear in the middle .Miocene of Europe and later in the upper 

 Miocene of North America. By following foreign forms a gradual 

 development is seen in the saber teeth, from that in the last false 



cat to that of the Pleistocene Saber-tooth tigers of Rancho La Brea. 

 These foreign forms show a gradual lengthening, increased lateral 

 compression, and, first one edge serrated, then both, until the final 

 climax is reached in the very n markable beast of our finds. 



2D 



