214 
Proceedings of the Royal Society of Edinburgh. [Sess. 
j+h h(j+h) 
N(t) = 1000 I <f>(A)dA — 1000 j TT~ i e~ u dt. 
r-i Kr-i) 
This function is tabulated in treatises on the Method of Least Squares.* 
The observed frequency numbers are best represented by the N(r) calcu- 
lated with the probable scattering of d=3'3° F. These values appear in the 
last column of Table II. 
It appears to me that the probable scattering of temperature is an 
important representative figure in the definition of a climate. 
-i£ <y go" v go 1 
The points of both yearly curves are also drawn in the diagram, in 
which the vertical lines show the range of N(r) during the year, the hori- 
zontal lines mark the observed points, and the circles indicate the calcu- 
lated points. 
I am indebted to Mr J. Connell for effecting the countings utilised in 
this paper. 
* See Ohauvenet, Spherical Astronomy , vol. ii, table ix, A. 
( Issued separately June 25, 1917.) 
