WHOLE VOL. NOTES. EUROPE 23 



All means refer to 7 h and have been reduced to 32 F., 

 Mean Sea Level, and corrected for gravity by reduction to 

 Lat. 45°- 



Temperature. 



The data are those published in Hourly Readings 1921 and in 

 the Observatories' Year Book, Section I, 1922- 1930. They 

 are derived from hourly tabulations of the records of the 

 photographic thermograph which is situated in a north-wall 

 screen on the uppermost story of the Observatory. The 

 height of the thermometer bulb above the ground is 12.5 m. 



Precipitation. 



The totals are derived from the records of a Beckley self -register- 

 ing rain gage at King's College. The enclosure in which the 

 Beckley rain gage is exposed had its position changed during 

 1928 on account of the extension of the College buildings. 

 From January to May inclusive its position was, as in 

 previous years, about 50 m to the northeast of the Observa- 

 tory Tower, but from June 1, 1928, the site has been 

 a new one, also to the northeast of the Observatory, but at 

 a distance of approximately 180 m and at a height above 

 Mean Sea Level of 11.4 m. 



EDINBURGH 



Authority. 



Robert C. Mossman. 



Site. 



The observations which embrace the period 1 731 -1736, 1764- 1930 

 for temperature, 1769-1930 for pressure, and 1770-1776, 

 1780 to June 1781, and 1785-1930 for rainfall, were taken 

 at various places in Edinburgh as described in my papers on 

 " The Meteorology of Edinburgh " (Trans. Roy. Soc. Edin- 

 burgh, vols. 38, 39, and 40, 1896, 1897, and 1902 respec- 

 tively), which deal with the material up to the end of 1900. 

 The actual series which is likely to furnish the standard data 

 for Edinburgh for many years to come are the observations 

 taken at the Royal Observatory, Blackford Hill, a southern 

 suburb of the city, not very ^ far distant from the localities 

 to which the greater part of the observations refer. The 

 pressure and temperature means refer to this site from Janu- 

 ary 1901 to December 1930 and for rainfall from January 

 1924. 



