THE METEOROLOGY OF EDINBURGH. 475 



Solar and Lunar Halos. {Tables XXII. and XXIII.) 



These optical phenomena are commonly observed when the surface wind is from 



the west, calms however having a still higher percentage. They frequently herald a 



deep barometric depression, and are thus of considerable forecasting value. With 

 easterly winds halos are rarely observed. 



Aurora Borealis. {Table XXIV.) 



From an examination of the data, it cannot be said that any connection can be traced 

 between displays of the aurora and the direction of the surface winds at the time of 

 their appearance. 



Price of Wheat per Imperial Quarter in Edinburgh from 1801 to 1900. 



Table XXVII. shows the fiars prices of the first quality of wheat from 1801 to 1900. 

 The data have been obtained from the Teind Office, through the courtesy of Mr Nenion 

 Elliot, S.S.C., and from Oliver & Boyd's Almanac. The highest price of wheat during 

 the period was 120/ in 1812, and the lowest 25/4 in 1893. A comparatively full 

 account of the political, economic, meteorological and other causes affecting the price 

 of wheat locally will be found in my paper, " On the Price of Wheat at Haddington from 

 1627 to 1897." * Table XXVIII. shows the harvest dates at the farm of Liberton, near 

 Edinburgh, from 1812-1836. 



In Table XXIX. will be found a list of Errata contained in Part II. of " The 

 Meteorology of Edinburgh," Trans., vol. xxxix. p. 63. 



* Accountants' Magazine, February 1900. 



