THE GLACIAL-THEORIES, 
95 
According to Mr. Walther, it is in that time thet Africa came into the 
reach of the migrating animals, having kept their essential characters up 
to this day. 
Fig. 3. Zoogeographies! map of Europe in the glacial period. (Orig.) 
4. The ice withdraws, a consequence of this beeing at the same 
time the withdrawel of the arctic forms, and the liberated territories 
