46 



MR JOHN AITKEN ON THE NUMBER OF DUST PARTICLES IN THE 



Table of the Number of Dust Particles in the Atmosphere — continued. 









O 03 





ci 



>> 



+3 







Place. 



Date. 



Hour. 



mbei 

 uticl 

 er c.( 



Wind. 





72 



State of 

 the Air. 



Remarks. 









-i 2-1 





H 



w 









May 

















PlLATUS KULM 



22 



1 P.M. 



875 



1 



48 



2 



Fog 









1.30 p.m. 



625 



. . . 



47 



1 



n 









2.30 p.m. 



1,275 





43 







j> 



Fog very dense. 







4.30 p.m. 



800 



S.W. 0'2 



43 



0-5 



» 



Raining. 





July 

















KlNGAlRLOCH . 



1 



5 P.M. 



2,000 



E. 0-5 



62 



10 



Hazy 



20 m. |. 



>> 



2 



10 A.M. 



2,325 



E. l' 



59 



5 



Thickish 



20 m. tV 







6 P.M. 



875 



N. 1 



56 



4 



Medium 



20 m, |. 







6.15 p.m. 



825 



)> 











)! 



3 



10 A.M. 



483 



N.W. 0-2 



60 



4? 



Clear 



20 m. ^q, showers. 









500 



» 



>) 



J) 



n 



Humidity too high local. 







6 P.M. 



3,050 



N.W. 2 



56 



6 



>j 



20 m. / , 



)> 



4 



10 A.M. 



265 



)> 



60 



8 



Very clear 



Sky blue to the horizon. 







11.30 P.M. 



484 



>> 



60-5 



8-5 



it 









4 P.M. 



1,625 



N.W. 3 



62 



9 



>) 









6 P.M. 



2,550 



N.W. 2 



56 



7 



Haze 





)! 



5 



10 A.M. 



300 



)) 



59 



JJ 



Very clear 









11.30 a.m. 



465 



)) 



60 



>) 



Clear 









1 P.M. 



410 



N.W. 3 



>j 



8 



j> 



Passing showers. 







6 P.M. 



250 



N.W. 2 



54 



5 



)> 



20 m. \ ; mist on hills. 



5) 



6 



10 A.M. 



450 



N.W. 3 



60 



7 



>> 









7 P.M. 



3,750 



N.W. 2 



52-5 



4-5 



Medium 



20 m. \. 



>> 



7 



10 A.M. 



280 



W. 0-2 



53 



2 



Thick 



Limit 12 m. 







1 P.M. 



236 



» 



52 



» 



JS 



Limit 6 m. 







1.30 P.M. 



176 



j> 



)> 



>> 



)> 



Raining. 







6 P.M. 



3,350? 



>) 



50 



>) 



Very thick 





I) 



8 



10 A.M. 



1,100 



N.W. 2 



57 



6? 



Very clear 



20 m. j^ ; been rain. 







12.30 p.m. 



1,650 



>j 



58 



8 



>> 



>) 







4 P.M. 



1,200 



N.W. 1 



55 



6 



Very clear 



20 m. y^ ; showers. 







9 P.M. 



750 



!) 



48 



3 



Thickish 



1 2 m. y 1 ^ ; been rain. 



)> 



9 



10 A.M. 



985 



N.W. 3 



52 



4 



j) 



12 m. |; showery. 







1 P.M, 



810 



N.W. 2 



58 



5'5 



i) 



12 m. |; showery. 







6 P.M. 



975 



j) 



54-5 



2-5? 



Clear 



20 m. | ; showery. 



)> 



10 



10 A.M. 

 2 P.M. 



625 

 1,000 



ii 



55 



7 



Thin haze 









7 P.M. 



650 



N.W. 1 



48 



4 



Hazed 



20 m. ^. 



)> 



11 



10 A.M. 



3,100 



Calm 



53 



7 



Clear 









12.15 p.m. 



4,800 



Calm 



56 



8 



» 









1 P.M. 



5,300 



N. 1 



. . . 





>) 



Number varying a good deal. 







1.30 P.M. 



3,400 



)> 



57 



9 



)> 









3 P.M. 



2,300 



N.W. 2 



> . • 



. . . 



19 









6 P.M. 



3,570 



» 



52 



6 



J) 



20 in. t2 . 



)) 



12 



10 A.M. 



4,200 



S. 1 



54 



4 



Thick 



12 m. J. 







11 A.M. 



800 



>) 



ii 



4-5 



ii 



12 m. | ; slight rain. 







3 P.M. 



975 



S.W. 1 



51 



2? 



i) 



12 m. |; been a shower. 







6 P.M. 



485 



S. 0-5 



>» 



i> 



Very thick 



Limit 15m.; raining. 



1) 



13 



10 A.M. 



82 



S.W. 0-5 



59-5 



1-5 



j) 



Limit 6 m. ; raining. 







10.30 A.M. 



61 



)» 



>) 



>> 



u 



!> 







2 P.M. 



45 



>> 



)> 



jj 



>) 









2.10 p.m. 



77 







... 



!) 





