TEMPERATURES. 147 



The principal results of this investigation may be shortly 

 stated in the following numbers _, expressing approximately the 

 conditions of temperature of the Miocene districts : 



A. In the Lower Miocene Epoch. 



Cent. Fahr. 



1 . Upper Italy (at 250 feet above the sea) 



had a mean annual temperature of . 22 71*6 



2. Switzerland 20J 69 



3. The basin of the Lower Rhine ... 18 64'4 



4. The vicinity of Dantzig 17 62'6 



5. Spitzbergen (78 N. lat.) 8 46'4 



B. In the Upper Miocene Epoch. 



1. Sinigaglia 21 69'8 



2. Upper Italy 20 68 



3. Switzerland 18J 65'3 



4. Silesia (Schossnitz) 15 59 



L2 



