488 



PATTULLO 



[CHAP. 22 



Fig. 2. August, September and October deviations. (See Fig. 1.) 



deviations up to +54 cm; the west coast of Mexico, +13 cm; and north- 

 eastern Siberia, + 27 cm. Parts of the Australian coast and one offshore island 

 have the relatively large negative deviation of — 10 cm. Principal exceptions 

 to this almost "mirror image" relationship between March and September are : 

 (1) large positive values occur in September along the southeastern United 

 States and at Iceland that are not equalled in magnitude by their negative 

 counterparts in March, and (2) deviations in southern Australia are negative in 

 both seasons. 



The patterns for the other two quarters, however, are neither quite so simple 

 nor quite so similar to each other. 



In June (Fig. 3) most but not all of the gauges in the central parts of the 

 oceans, both north and south of the equator, show negative deviations. Large 

 positive deviations occur in three principal areas : along all of the northern 



Fig. 3. May, June and July deviations. (See Fig. 1.) 



