♦582 



MR JOHN AITKEN ON THE NUMBER OF DUST PARTICLES IN THE 



Table 



LI.— TI 



ic Number 



of Dust Particles 



in thi 



; Atmosphere for 1892 — continued. 



Place. 



l)ate. 



Hour. 



° «3 . 



,_, CD o 

 CD o u 



d ^ a> 



Wind. 



CD ai 



as 



43 



State of 

 the Air. 



Remarks. 









5(2 ft 



1 CD - 



H 



w 









July 

















KlNGAIRLOCH 



20 



11.30 A.M. 



675 



E.S.E. 0-2 



56 



5 



Very clear 



(200). 







1 r.M. 



1,938 



S.E. 0.5 



57 



JJ 



)> 



Cloud {. 







4 P.M. 



3,125 



N.W. 1 



60 



8 



Clear 



jj 







7 P.M. 



3,800 



!) 



55 



5-5 



;> 



Only cirrus clouds. 







9 P.M. 



4,000 



.. 



53-5 



4-5 



Medium 





» 



21 



9 A.M. 



448 



N.W. 0-5 



5) 



3 



>> 



(70). Clouded all over. 







10 A.M. 



329 



N.W. 0-2 



55 



2-8 



Thickish 



Rain in distance. 







1 P.M. 



2,900 



E. 0.2 



55-5 



3 5 



•>•> 



Clouded all over. 







4 P.M. 



487 



Calm 



54-5 



1 



Very thick 



Misty rain. 







7 P.M. 



55 



)> 



56-5 



JJ 



j ? 



jj 







9 P.M. 



38 



N.W. 0-2 



55-5 



1-5 



Clear 



( 1 30). Upper air thick. 



JJ 



22 



9 A.M. 



231 



N.W. 0-5 



57 



5 



Medium 



(70). Clouded all over. 







10 A.M. 



132 



JJ 



57-5 



4-5 



Clear 









1 P.M. 



182 



JJ 



58-5 



6 



Very clear 



(200). 







2 P.M. 



245 



JJ 



60-5 



5-5 



>» 



Clouded all day and 

 raining on hills near. 







4 P.M. 



182 



») 



59 



6 



>> 









7 P.M. 



177 



N.W. 0-2 



56 



4-5 



>) 



Occasional slight rains 

 all day. 







9 P.M. 



175 



JJ 



55 



4 



5J 



Clouded all day. 



» 



23 



9 A.M. 



290 



JJ 



56 



4-5 



Medium 



(70). Cloud |, 







10 A.M. 



308 



N.W. 0-5 



58-5 



5-5 



n 



jj 







1 P.M. 



3,800 



)) 



61 



6 



Clear 



(130). Only cirrus clouds. 







2 P.M. 



4,475 



!) 



>> 



JJ 



j) 



Cloudless. 







4 P.M. 



4,350 



JJ 



62-5 



6-5 



Clear to 

 medium 









7 P.M. 



1,800 



N.W. 1 



59 



5 



jj 



(130). Cloudless. 







9 P.M. 



2,900 



JJ, 



55 



3-5 



Thickish 



(30). Cloudless. 



>> 



24 



9 A.M. 



631 



N.W. 0-5 



54 



2 



Very thick 



(8). Clouded all over. 







10 A.M. 



712 



E. 0-5 



55 



1-5 



Thick 



Cloud ', 







2 P.M. 



3,675 



S.E. 0-5 



63 



7 



Medium 



Cloud yV 







2.30 P.M. 



3,650 



N.W. 0-5 



64 



7-5 



jj 









4 P.M. 



1,862 



W. 0-2 



JJ 



7 



Clear 



(150). 







7 P.M. 



1,450 



N.W. 0-5 



60 



6 



Very clear 



(250). Cloudless. 







9 P.M. 



1,525 



jj 



54 



3-5 



Clear 



Cloudless. 



)) 



25 



9 A.M. 



560 



JJ 



59 



6 



jj 



Cloud T V 







10 A.M. 



511 



JJ 



60 



5-5 



jj 









12.30 p.m. 



1,125 



JJ 



61 



6 



Very clear 



(200). Only slight cirrus. 







1.30 p.m. 



2,150 



J> 



64 



8 



jj 



u jj 







4 p.m. 



6,200 



N.W. 1 



65 



7 



jj 



jj jj 







7 P.M. 



1,250 



JJ 



60 



5 



jj 



jj » 







9 P.M. 



2,050 



JJ 



57 



JJ 



Clear 



jj jj 



)) 



26 



9 A.M. 



1,150 



S.E. 0-2 



62 



4-5 



Very thick 



(12). Cloud \. 







10 A.M. 



725 



jj 



63 



5 



jj 



jj 







10.45 a.m. 



975 









Thick 



On yacht on Loch Corrie. 







11 A.M. 



1,175 



Calm 







)> 



On yacht at north side 

 of Loch Linnhe. 







11.20 A.M. 



1,150 



J> 



63 



5 



JJ 



On yacht at south side 

 of Loch Linnhe. 







11.30 A.M. 



1,250 



N. 0-2 









On yacht near Appin. 







12.30 p.m. 



1,250 



JJ 



64 



5 



Thick 



On yacht near Oban. 



J> 



27 



:; p.m. 



5,200 



S. 0-2 



59-5 



4 5 



jj 



On yacht in Sound of 

 Kerrera. 



