OF FREQUENCY OF THE BAROMETRIC HEIGHT AT DIVERS STATIONS. 431 
(ii.) That this expression not being large, a curve like (ii.) above describes with an 
equally small percentage error (p. 383) the frequency distribution. 
(hi.) That a point-binomial could be found to fit the observations also with a close 
degree of accuracy. 
The discussion of the thirteen years of Cambridge observations was not therefore 
conclusive as to the best means of describing barometric frequency, and more than 
one set of constants seemed capable of performing this function with an equal degree 
of accuracy. It was sufficient to indicate that the generalised probability curve in 
one type or another was fully capable of supplementing the obvious and admitted 
inadequacy of the normal curve. 
The first stage of the present investigation was accordingly an inquiry as to the 
best type of generalised probability curve for barometric frequency. 
4 . On the Value of the Criterion 6 + 3^^ — 2(5^ for Divers Localities, 
Table II. 
Place. 
Number of 
observations. 
Ih- 
! 
Sfc. Leouards 
2192 
0-07123 
3-04212 
Southampton . 
4748 
0-12260 
3-36529 
Babbacombe 
4748 
0-13110 
b‘y4i5u 
Carmarthen .... 
4748 
0-12575 
3-26479 
Churchstoke 
4018 
0-12578 
3-18891 
Llandudno .... 
2922 
0-08777 
3-11777 
Parsonstown 
4748 
0-15202 
3-23306 
1 jMarkree Castle 
3653 
0-16380 
2-98237 
Armagh. 
1826 
0-20204 
3-31567 
Londonderry 
2557 
0-13185 
3-06986 
1 Stonyhurst .... 
2557 
0-10401 
3-42101 
Scaleby. 
2192 
0-151-22 
3-12878 
Clasgow. 
1826 
0-18256 
321205 
Laudale. 
4018 
0-21973 
3-19784 
Dunrobin Castle . 
2922 
0-16714 
3-16067 
Dundee. 
4018 
0-17885 
3-23219 
Scarborougb 
1826 
0-13441 
3-30247 
Hilliugton .... 
4748 
0-13942 
3-2664-2 
Celdeston .... 
2192 
0-116.54 
3-27888 
Margate. 
2922 
0-21562 
3-50141 
6 + 3/3, - 2/3o. 
+ •12944 
-■36277 
-•28970 
-•15231 
-•00049 
+ •02778 
-•01006 
+ •52664 
-•02522 
+ •25581 
-•53001 
+ •19610 
+ •12359 
+ •26350 
+ •18008 
+ •07217 
-•20172 
-•11458 
-•20815 
. o K K ^ 
This table shows us at once that there is a comparatively small range of values for 
the constants and for very diverse localities. The mean values of the con¬ 
stants, weighted with the number of years over which the observations extend, are 
as follows :— 
-14621, = 3-24179, 6 + 3/3^ - 2^3 = --04495. 
It will thus be seen that the mean value of the criterion is small. Actually, it 
