THE GLACIAL-THEORIES, 
91 
W 
Fig. 1. Zoogeographical map of Europe in the Pliocene. (Orig.) 
(In figs. 1—5: — 1. The Polare ice; — 2. Subarctic biosphere; — 3. Thermophil 
biosphere ; — 4. Tropical biosphere ; — 5. The steppe zone ; — 6. The forest of 
deciduous leaved trees ; — 7. Coniferous forest formation.) 
