540 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



1929 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 50° N. Long. 120" E. 



950 mb. + 



74.6 72.3 



58.6 57.6 53.8 51.7 55.2 61.2 66.2 



77.5 63.6 



