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oues witli WS, are aqiially predominant, when there is winter in 

 that Hemisphere. It will, therefore, be seen, that the forces 

 which promote the warm sea currents in our latitude are most 

 active in the winter. And the same is the case in the Southern 

 Hemisphere, so that it must be said that the winter favours 

 these currents, whether it falls when the sun is nearest as with 

 us or when it is most distant, as in the Southern Hemis- 

 phere. From Prof. Zoppritz^s studies of the currents it appears 

 that the wind excercises an influence over the strength of them 

 even long after it has ceased to blow. The action of the winds 

 is summed up through centuries and the total is recorded in 

 the sea- currents. 



As we know that the wind-conditions vary at dilferent sea- 

 sons, and that the effect of the wind does not cease as soon as 

 it is discontinued, but leaves traces in the sea currents for a 

 long time after, so that, in fact, the strength of the current is 

 dependent on the average force of the wind during last great 

 ages, it can hardly be a matter of indifference whether the thou- 

 sands of days fall as a surplus to winter or summer in the 

 10,500 yearly half-cycle. When they fall to the winter, the 

 south-west winds must be more predominant than else and, corre- 

 spondingly, when they fall to the summer, weaker. It seems, 

 therefore, reasonable that the currents must increase or decrease, 

 as the equinoctial line moves round. When the ivinter falls in 

 aphelion, our ivarm currents will increase, and ivhen the reverse 

 is the case, they tvill decrease. We should, therefore, now in the 

 Northern Atlantic liave a weaker current, and in North-Westeru 

 Europe less rain, and a greater difFerence between winter and 

 summer heat, and this is exactly what the theory demands. 



In regions with different weather conditions the case will 

 be different. In the Eastern parts of North- America, for in- 

 stance, north-west-winds are more predominant in the winter and 

 south-west ones in the summer. Winter in aphelion will here 

 increase the north-west winds, and one might conclude, that 

 these parts under such conditions would perhaps thereby obtain 

 a more severe climate, so that it seems evident that variations 



