Jo4 PROFESSOR FORBES ON THE CLIMATE OF EDINBURGH. 
31. The unfortunate blank in Mr Apie’s observations from 1805 to 1820 inclu- 
sive, detracted considerably from their interest, and I used every effort to discover 
some other register which might be used to supply the defect. None from the 
immediate neighbourhood of Edinburgh, however, appeared. But my attention 
was directed by M. Dove’s summaries to a register of twenty years’ continuance, 
kept at Dunfermline by the Rev. Mr FEercus, which extended over the missing 
years, and which farther indicated a climate remarkably agreeing with that of 
Edinburgh, not only in the annual mean, but in the partition of temperature 
throughout the seasons. 
32. The town of Dunfermline Jies thirteen miles in a right line to the N.W. of 
Edinburgh. It is little more than three miles distant from the estuary of the 
Forth, and about 300 feet above its level. 1 shall detail in a short paper on the 
climate of Dunfermline, following the present one, the fortunate circumstances 
which put me in possession of Mr FEerGus’s original registers, extending over a 
period nearly equal to those of Mr ApiE. 
33. In order to reduce the Dunfermline temperatures to those of Edinburgh, 
I selected the ten years 1821-30, during which observations were made contem- 
poraneously at both places; and taking the monthly means, and averaging the 
differences for each month of the year, I obtained the following numbers for the 
reduction of the Dunfermline monthly mean temperatures at 9 a.m., to those of 
Edinburgh (mean of maxima and minima) :— 
January, <deewedimbieey xsee Talyt a jodh. Sew feat ee 
February, : : . +0:19 August, 2 s + 0°67 
March, . : , : + 1°46 September, ; ; : + 1-20 
Aprils: : : : + 1:08 October, : ‘ : +0°71 
May, 5 z ; . + 0°66 November, - : +011 
June, A . A i 0:00 December, ; : ; — 0-29 
If these corrections be projected, an annual curve passes very fairly through them, 
indicating two maxima in March and September, and two minima in June and 
December. 
34. The corrections derived from the table above were employed to reduce the 
Dunfermline observations of the years 1805-20 (deficient in Mr Aptm’s series) to 
Edinburgh. Itis to be observed, that these corrections are irrespective of the error 
of either thermometer, and merely reduce the readings of the one to those of the 
other. I have distinguished the derived observations in the following table by 
the letter D. While I neither claim for them the original worth and precision of 
Mr Apte’s observations, nor rely too much on the universal application of the 
reductions from one locality to another, I believe that they will be found to in- 
dicate in a trustworthy manner the specific characters of those seasons which 
would otherwise have been defective in the series. 
