THE ADVANCE OF SCIENCE 109 



only the Elephants but the Sirenia (the Dugong and 

 Manatee) took their origin in this area. Amongst them 

 are also gigantic forms of Hyrax, like the little Syrian 

 coney and many other new mammals and reptiles. 



Another great area of exploration and source of new 

 things has been the southern part of Argentina and 



FIG. 29. 



Photograph of a complete model of the skull and lower jaw of the 

 ancestral [elephant, Palaomastodon, discovered by Dr. Andrews in the 

 Upper Eocene of the |Fayum Desert, Egypt, and modelled and restored 

 under'his direction in the Natural History Museum, London. The com- 

 paratively short trunk or snout rested on the broad front teeth of the long 

 lower jaw. The face is elongated, and the cheek-teeth are numerous. 



Patagonia, where Ameghino, Moreno, and Scott of 

 Princeton have brought to light a wonderful series of 



