526 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 79 



POTSDAM, GEEMANY 



Lat. 52° 23' N. Long. 13° 4' E. 11 = 80 m., lit = 2.2 m. 

 TEMPERATURE IN DEGREES C. 



Means of i(7" + 14" -f- 21'- + 21") 



M'ns —0.8 0.6 3.6 7.8 12.9 16.3 17.6 16.6 13.1 8.4 3.3 0.8 8.3 



