Ozone and the Atmosphere. 



197 







a 



B 



WEATHER. 







OZONE. 



o 



c-i 







REMABKS. 



DATE. 





i 











o 



55 



2 « 









W 



EH 



pq 



£ 



K ° 

 1 ° 





Aug. 1.. 



5 



66° 



28.325 



Oalm. 





Clear (o) 



No air stirring. 





4 



75° 



28.275 



s. 





Clear (o) 



Exhilarating. 



" 2.. 



3 



68° 



28 25 



s.w. 





Stratus (1) 







4.5 



72° 



28 1 



s. 





" (3 



'■ Mackerel-sky." 



" 3.. 



4.5 



66° 



28.025 



s. 





" (10) 







2 



72° 



27 925 



s.w. 





Cum (1) 



Clear and bright. 



" 4.. 



4 



64° 



28.025 



N. 





Cum. (3) 



Wind-storm at night. 





2.3 



66° 



28 



N. 





Cum. (5) 



" in afternoon. 



" 5.. 



2 



62° 



27.95 



S. 





Cum. (1) 



) Opposing air-currents produc- 





3 



64° 



27.95 



8. 





Nimb.(lO) 



i ing 5 fctorms. 



" 6.. 



2 



61° 



27.925 



N. 





Cum (1) 



Brilliant atmosphere. 





1.2 



66° 



27.9 



N. 





Stratus (9) 



Bright. 



" 7.. 



7 



63° 



27.8 



8. 





Nimb . (10) 



Heavy rain at night. 





6 



72° 



27.8 



8. 





Stratus (7) 



Shifting clouds. 



" 8.. 



7 



70° 



27.825 



Calm 





Clear (0) 



| Heavy rain and thunder during 





7 



78° 



27.825 



N.E. 



Much . 



Cum. (5) 



1 day. 



9.. 



1 



72° 



27.825 



S.W. 





Fog (10) 



Haze (smoke). 





3 



74° 



27.775 



S.W. 





Cum. (5) 



Dull. 



" 10.. 



3 



72° 



27.8 



s.w. 



Bain. 



Cum. (1) 



Haze. Little air. 





1.2 



65° 



27.35 



s.w 





Cum. (2) 





" 11.. 



1 



65° 



27.975 



s.w. 





Strat's(lO) 







1 



67° 



28.075 



s.w. 





Nimb- (4) 



Thunder storms. 



" 12.. 







68° 



28.05 



s. 





Clear (0) 



Starlight night. 





2 



65° 



27.95 



s.w. 



Much. 



Nimb (10) 



Opposing winds. 



" 13.. 



I 



68° 



27 95 



s.w. 



Much. 



" (10) 







2 



70° 



28 



N.E. 





Nimb. (9) 





" 14... 



1 





27.925 



Calm. 





Mist (5) 



Heavy rain at night, 





1 



65° 



27.9 



vv. 



Kain. 



Nimb. (10) 





'• 15.. 



1 



67° 



27.925 



s.w. 



Bain. 



Cnm.(10) 









67° 



27 9 



N.E. 



Bain. 



Nimb. (10) 





" 16.. 



5 



64° 



27.875 



('aim. 



Bain. Cum (10) 







1 ) 



66° 



27.85 



N.E. 



Bain. Nimb. (5) 





Examination of Methods in Ozonometry. 



On resuming laboratory work in autumn, an inquiry, which 

 seemed essential before making any further observations upon 

 atmospheric ozone, was the deportment of the various tests 

 under precise and varied conditions. It was desirable to ex- 

 periment upon the most convenient method of preparing ozone, 

 upon the precautions requisite for obtaining it in as pure and 

 concentrated a form as possible, and upon the methods of esti- 

 mating its percentage in an atmosphere of ozonized air or 

 oxygen. 



Preparation of Ozone lyy Electrolysis of Water containing 

 Sulphuric Acid: — Electrolysis was not found a convenient 

 method of preparing ozone in considerable quantities. But it 

 js so important to demonstrate the formation of ozone, accord- 



