CLIMATOLOGICAL AVERAGES VON BEZOLD 



421 



10 0.8 06 04 0.2 O 02 O.I 06 as 10 



Doing this and applying a similar method to the other elements 

 we obtain the curves given in fig. 61. 



In this figure it is still more clearly seen or at least suggested, 

 that the maximum of the insolation curve is broken into two 

 separate maxima in the temperature curve. This separation 

 becomes more striking if we imagine the temperature curve as 

 formed of two superposed systems, one of which, the simplercurve, 

 has only one maximum at the equator; the second superposed on 

 that would therefore show two clearly separated maxima. 



If we pass to the 

 next curve in fig. 60, 

 that for atmospheric 

 pressure, we perceive 

 easily the two well- 

 known maxima first 

 pointed out by Ferrel. 

 The difference be- 

 tween this present 

 method of presenta- 

 tion and the ordinary 

 method such as we 

 find, for instance, in 

 the "Lehrbuch" of 

 Sprung consists es- 

 sentially in the fact 

 that the maxima are 

 separated farther 

 apart and that the 

 regions of low pressure 

 in the higher latitudes 

 are compressed to 

 smaller spaces. How- 

 ever, the ordinary 

 method of arrangement of the tables and graphic presentation has 

 one advantage, not to be underestimated especially in the investiga- 

 tion of the average distribution of pressure, since the differences 

 in respect to atmospheric pressure for equal increase of latitude 

 are simply proportional to the gradients toward the pole. 



In the present method of presentation the inclination of the 

 curves to the axis of abscissae gives directly and most appropriately 

 an idea of the magnitude of the gradients. 



In the diagram fig. 60, as already stated, the two maxima of 



FIG. 61. HOLOSPHERIC AVERAGES. 



