2l6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 70 



But here we find the same relation, namely: the temperature some- 

 times goes directly with the curves of solar radiation and some- 

 times Oppositely to them. This is perhaps even more marked for 

 the temperature than for the pressure variation. Take for example 

 the temperature curve for Antananarivo (fig. 71, IV, T). It shows 

 for the time 1887 to 1896 a remarkably direct agreement with the 

 curves for prominences and magnetic elements in Potsdam, but for 

 the years 1897 to 1904 the temperature curve for Antananarivo runs 

 oppositely, particularly to the magnetic curve. Then after 1905 the 

 curves go together for some years until again in 1910 and 191 1 they 

 run oppositely, and so it is with the other curves. In figure 68, 

 one can compare the curves of dififerent meteorological elements of 

 Batavia for the series of years i860 to 1909 with the curves of sun 

 spots and prominences, which are the lowest in the figure. We 

 find here the same thing. While the c-curves (which are obtained 

 by consecutive twenty-four-month means) show agreement with 

 the inverted sun spot curves, so that the most distinctly well-marked 

 maxima of temperature and air pressure fall upon the minima of sun 

 spots, the short variations of a few years shown in the Z?-curves 

 (which are prepared from consecutive twelve-month means) go 

 partly directly, partly oppositely with the variations of a few years 

 in the prominences. 



In figure 74, at the bottom, we have given the prominences, and 

 the curve M for the disturbance of the three magnetic elements in 

 Potsdam. We see that a great similarity appears between the last 

 mentioned curve and the topmost temperature curve for the Pacific 

 coast of the United States. The temperature varies directly with 

 the variations of the magnetic elements. But maximum and mini- 

 mum in the magnetic curve fall before maximum and minimum in 

 the temperature curve. On the other hand, the variations of the 

 three other temperature curves for the United States go on the whole 

 generally oppositely to the variations in the prominences and in the 

 disturbance of the magnetic elements. 



In figure 75, at the bottom, we have the curves of sun spots (S) 

 prominences (R, C) and the daily variation in the magnetic declina- 

 tion in Christiania (M). It appears that the variations of a few 

 years' period in the temperature of the water for the coast stations of 

 Norway, the air temperature in all Norway, and the air temperature 

 in Stockholm (II-IV) go partly direct with the variations of a few 

 years in the curve of declination in Christiania; but that the varia- 

 tions in the latter occur somewhat before the variations in the tem- 

 perature (see for example the waves in the magnetic curve for 



