ATMOSPHERE OF GREAT BRITAIN AND ON THE CONTINENT. 



667 



TABLE I. — The Number of Dust Particles in the Atmosphere for 1891. 



Place. 



Date. 



Hour. 



Number of 

 Particles 

 per c.c. 



Wind. 



H 



>> 



w 



State of 

 the Air. 



Remarks. 





March 



















Hyeres . . 



28 



4 P.M. 



41,000 



W. 2 



52-5 



6-5 



Medium 



Winddirect from Toulon. 



>> 



30 



3.30 p.m. 



6,250 



N.W. 2 



55 



12-5 



Clear 



Number variable ; air 

 probably polluted by 

 village near. 







4.30 p.m. 



4,800 



)) 



)> 



>) 



3) 





>) 



31 

 April 



3 p.m. 



2,600 



N.W. 3 



50 



12 



JJ 



Fine blue haze. 



J? 



2 



3 p.m. 



3,000 



S.E. 1 



51 



9 



Medium 



Number variable ; air 

 from Hyeres. 



>) 



6 



4 p.m. 



785 



S. 0-5 



55 



5 



Clear 





j) 



7 



4 p.m. 



7,500 



W. 2 



60 



6 



jj 



Air from Toulon. 



>» 



8 



4 P.M. 



1,650 



N.N.W. 3 



58 



12 



jj 





Mentone . . 



11 



4 P.M. 



1,125 



S.W. 2 



61-5 



9-5 



jj 



At Cape Martin ; Esterel 

 hills visible. 



>> 



14 



3 P.M. 



8,500 



S. 0-2 



54 



7 



Hazy 



On hill 1000 feet; air 

 from Mentone. 



» 



17 



3 P.M. 



1,675 



S.W. 2 



60 



7 



Medium 



At Cape Martin ; Esterel 

 hills not visible. 







4 P.M. 



2,800 



)> 



58 



7 



jj 



jj jj 



j? 



18 



11.30 A.M. 



3,600 



S.W. 0-5 



62 



8 



jj 



Not so clear as previous 

 day. 



)> 



20 



10.30 A.M. 



1,575 



S.E. 1 



58 



4 



Thickish 



Taken on the beach ; 

 air from sea. 







4.30 p.m. 



1,500 



S.E. 0-2 



59 



5 



)) 



jj jj 



Milan . . . 



23 



11 A.M. 



1,660 



E. 1 







Thick 



Taken on top of the 







11.15 A.M. 



40,000 



» 







)) 



spire of the Cathedral; 

 highest and lowest 

 averages. 



Bellagio . . 



24 



4 P.M. 



1,550 



S. 0-5 



47-5 



2-5 



Thickish 



Top of Serbelloni. 



jj 



25 



10 A.M. 



2,100 



N. 1 



48-5 



3-5 



Thick 



Air coming off lake. 







4 P.M. 



4,850 



S. 0-2 



47 



2 



jj 



Number variable. 



j? 



26 



1 P.M. 



3,100 



?Calm 



58-5 



7-5 



Clear 









2.30 p.m. 



1,500 



!> 



58 



7 



jj 









6 P.M. 



2,750 



Calm 



SJ 



)) 



u 





)? 



27 



11 A.M. 



3.200 



W. 0-5 



JJ 



)) 



Medium 









4 P.M. 



1,325 



S. 0-2 



53 



6 



jj 



Taken on hill-side 2000 

 feet up. 







5 P.M. 



2,750 



JJ 



56 



6-5 



jj 



Taken on hill-side 1000 

 feet up. 



JJ 



28 



10 A.M. 



1,900 



N. 1 



50 



3 



Very thick 



Raining. 







3.30 p.m. 



2,250 



Calm 



48 



1-5 



jj 



jj 



JJ 



30 



12.30 



2,500 



W. 0-2 



62-5 



10 



Clear 









3.30 p.m. 



3,000 



»> 



67 



8 



jj 







May 

















JJ 



1 



12.30 



7,800 



W. 0-2 



66 



9 



Thick haze 



Air off lake. 







4 p.m. 



2,550 



)! 



JJ 



» 



jj 



On shore. 







4.15 p.m. 



3,000 



)> 



65 



6 



jj 



In boat on lake. 



JJ 



2 



10.30 A.M. 



4,400 



S. 0-2 



J» 



9 



jj 



On the Serbelloni. 







12 



2,150 



W. 0-5 



69 



10 



jj 









5.30 p.m. 



2,550 



S. 0-5 



67 



11 



jj 



At Cadenabbia ; been 

 slight rain. 



JJ 



4 



9 A.M. 



2,500 



N. 0-5 



60 



3-5 



Very thick 



Raining. 



JJ 



5 



10.30 



3,950 



N. 0-2 







Thickish 



Observed on steam-boat. 



VOL. XXXVII. PART III. (NO. 28). 



5 H 



