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BAEOMETEIC VAEIABILITY AT KIMBEELEY AND 
ELSEWHEEE. 
By J. E. Sutton, Sc.D., F.E.S.S.A. 
(Eeceived October 14. Eead October 15, 1913.) 
The present discussion is a further contribution to the meteorology of 
the Table Land of South Africa. Previous papers have been published 
in the Transactions of the South African Philosophical Society, and of the 
Eoyal Society of South Africa. The main intention at this time is to give 
working constants of barometric variability for such few stations in Africa 
south of the equator as have been able to supply the necessary detailed 
observations. And, for purposes of comparison, the corresponding results 
for a number of stations outside the country have been computed. These 
latter are not by any means as numerous as might have been wished, 
but they represent all the series of observations of sufficient length 
which I have been able to buy, or borrow, or beg. Even then the 
discussion of what is available is far from complete, although it has been 
in hand for a very long time. Various accidents — the intermittent menaces 
to the existence of the Kenilworth Observatory — have conspired to delay 
it. Apart from that, when it comes to decidmg whether it is better to 
publish a larger number of incomplete papers or a small number of more 
finished ones, the former has always seemed to be the better way. For 
the material is then, at any rate, put on record for the use of any one who 
cares to go further with it. That plan has therefore been followed in the 
present instance. 
By "barometric variability" is meant the difference between the 
pressures of the air at the same hour on two consecutive days, regardless 
of sign. The average value of this variability from day to day for a month 
(or year) is called the monthly (or annual) mean variability. Work upon 
the oscillations of the barometer has been mainly confined to a discussion 
of the monthly ranges of pressure — i.e. of the differences between the 
greatest and least pressures occurring in a month — or of the ranges 
usually met with in passing from "highs" to "lows." The present 
discussion is more general in outline, and includes these others as special 
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