550 
Proceedings of the Royal Society of Edinburgh. [Sess. 
was not more hazed during the early observations than the cyclonic. 
Further, in the early observations the air was only thickly hazed when the 
wet-bulb depression was slight, under 4 degrees ; whereas this year there 
were observations with very low limits of visibility when the wet-bulb 
depression was as much as from 6 to 12 degrees. 
(Issued separately September 7 , 1910 .) 
