(hi the i^nrfacc Temperature of North Sen and Xorth Atlantic. 37 



degree higher in summer and less tlian lialf a degree lower in 

 wiuter. 



Fig. 32, representing the anomalies of the meridian of 0°, illus- 

 trates a number of points which will be more or less obvious to the 

 reader, l)ut which might lead us into a long discussion were I to 

 attempt to describe them in detail. The most important points 



Jy 



Fig. 31. — Surface-temperature fluctuations along the meridian of 10° W. 

 compared with those in 1 5° W. 



DJFMAMJJyASONDJF 



Fig. 32. — Surface-temperature fluctuations along the meridian of U°, reduced 

 to the same standard of comparison, viz. lo" W. 



appear to be the following: (1) an asymmetry of the whole diagram, 

 which will be easily recognised as due to a phase difference between 

 the southern and northern portions of the meridian represented ; 

 (2) the slight excess of maximal temperature to the southward, and 

 the somewhat greater excess of maximal temperature near the 

 northern border of the diagram. The latter portion of the phen- 

 omenon is not so much due to any positive conditions in the meridian 



