WHOLE VOL. NORTH AMERICA 8ol 



PUEBLA, MEXICO 



Lat. 19° 2' N. Long;. 98° 12' W. Hb = 2,150 m. 



TEMPERATURE IN DEGREES C. 



Means of K?*" + 14'' + 21") 



M'ns 12.2 13.7 15.8 17 9 18.5 17.9 17.1 17.2 16.7 15.8 14.2 12.4 15.8 



