196 
lion consistent with the determination of the angular velocity 
of the faculae by the Kew-astronomers, that of the sunspots by 
occur; on the other hand a direct connection between suns 
and meteorological elements has not been stated and it i 
therefore quite possible that the cause of the influence discusel 
in this paper has to be sought for in the lower regions of tht 
photosphere, rotating with greater angular velocity. Anat 
tempt to obtain an answer to this question by applying № 
method employed here to the five-yearly series of ша шї 
observations made at Batavia from April 1885 till March 1885, 
failed because the results of this inquiry still wanted the cl 
gruity necessary for publication. | 
The preliminary results are that the periodical variation d 
the daily means, if existing at all, is too small with геврей! | 
the degree of exactness obtainable in the absolute dele 
minations, to afford a suitable matter for this inquiry: Ве. 
daily variations however, the accuracy of which is much grelle“ 
exhibit an unquestionable periodic variation and will p d 
afford sufficient evidence, when a ten-yearly series can We 
taken into account. EE 
In comparing the value of В — 25.812 days with the өм 
found by means of sunspot observations, it has to be remat 
in the first place that this value must be considered as 
ponding with synodical rotation ‚ the siderical period being 24" | 
latitudes between 10 and 30 degrees are applicable 
zones alone and for the equatorial zones give values cons" 
