192 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 70 



of meteorological phenomena in different parts of the earth. As 

 was to be expected, these show that in high latitudes the relations 

 are more complex and are connected with more frequent and greater 

 fluctuations than in the tropics where the phenomena proceed more 



Figure 68. Curves of the meteorological elements at Batavia. a-curves 

 indicate the directly observed monthly means, ^-curves represent the mean 

 of the foregoing in consecutive twelve-month smoothing, c-curves, continued 

 consecutive twenty-four months smoothing. S, smoothed relative sun spot 

 numbers. R, P. C, successive twelve-month means of the daily numbers of 

 prominences according to the observations in Rome (R) Palermo (P) and 

 Catania (C). Scale on the right, 100 equals lo.o. 



simply and are more easily studied. It is therefore most natural 

 to begin our investigations with the tropics. 



VARIATIONS OF METEOROLOGICAL ELEMENTS IN BATAVIA 



Among the tropical stations we have studied first Batavia, where 

 very complete satisfactory investigations of meteorological elements 

 have been made for a long series of years. 



