THE METEOROLOGY OF EDINBURGH. 



69 



with Adie's for the five years 1822 to 1826. These two last-mentioned registers not being 

 deduced from observations taken in the city, were only employed as a check on the other 



registers. 



The means from 1822 to 1896 given in Table VII. were derived from the following 

 sources. From 1822 to 1850 Adie's mean temperature values, as reduced by Forbes, 

 were employed, but the means were recomputed from 1824 to 1831 and from 1840 to 1850. 

 During the latter period some blanks were made good by interpolating from Waterston's 

 register. The means for these years will accordingly be found to differ in some months 

 from those given in Forbes' paper. From October 1849 to January 1853 the means were 

 obtained from a record kept by Alex. Adie & Sons. From February 1853 to 1855 the 

 observations taken by the Royal Engineers were utilised, while from 1856 the returns 

 from the Edinburgh stations of the Scottish Meteorological Society were employed. 



The station was in Melbourne Place from May 1858 to December 1861.* The 

 returns from this station are too high, owing to radiation from the surrounding buildings. 

 They have accordingly been corrected by the smoothed values calculated from the data 

 given in the under-mentioned report, f The corrections which are all minus, have been 

 severally ascertained for the maximum, minimum, and mean temperatures, as follows : — 





Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



• 



• 



















. 



o 



o 



o 



■ 



■ 



Maximum, . 



2-9 



3-0 



2-3 



2-5 



2-5 



3-2 



3-3 



3-5 



3-1 



2-7 



2-5 



3-0 



Minimum, 



2-5 



2-4 



2-3 



2-5 



2-5 



2-5 



2-5 



2-5 



2-7 



2-6 



2-6 



2-5 



Mean, . 



2-7 



2-7 



23 



2-5 



2-5 



2-8 



2-9 



3-0 



2-9 



2-6 



2-5 



2-8 



With regard to the observations of the past thirty-five years, for a few months inter- 

 polations had to be made from Leith or Inveresk. When this was found necessary the 

 values were corrected for height. 



The mean temperature for the period is 46 0, 8, or reduced to sea-level, 47°"7, the 

 correction being 1° for every 276 feet. The highest mean annual temperature was 49°'6 

 in the years 1779 and 1846, and the lowest 43 '8 in 1879, giving a range in the annual 

 means of 5 0, 8. The warmest month was July 1779, with a mean temperature of 65°*2 

 or 6° - 6 above the average, and the coldest month January 1814, the mean being 26 0, 5 

 or 10° '3 below the average, the extreme range in the monthly means being 3 8° '7. 



The following table shows the highest and lowest mean monthly temperatures 

 during the last 133 years : — 



* In part 1 of the paper it was erroneously stated that the observations were made at this station from 1853 to 1856. 

 t (See Quarterly Report of the Meteorological Society of Scotland, for the quarter ending 31st March 1862, p. 7.) 



