52 Dr. Bottomley on the late 



the magnetic condition of the earth, produced corresponding 

 changes in the direction and velocities of the great currents 

 of the atmosphere, and in the distribution of barometric 

 pressure, temperature, and rainfall. — " Notes on the Relative 

 Velocities of different Winds at Southport and Eccles, near 

 Manchester." 



Sessio7z i8y2-yj. — He made no communication to the 

 Society. 



Session iS'/j-'/^.. — No communication. 



Session iSy^-yS. — "On a Source of atmospheric Ozone." 

 In this paper he pre<^ents himself to our notice in a new 

 phase not only as an observer, but as an experimenter. He 

 had remarked that when fog or haze were prevalent it 

 rarely happened that even the faintest trace of ozone could 

 be obtained, and came to the conclusion that atmospheric 

 ozone was absorbed or decomposed by haze or fog, and was 

 given off or produced when evaporation changed haze or 

 fog into visible vapour. He had also noticed that haze does 

 not only prevent the coloration of the test papers, but it also 

 rapidly bleaches those which already had been coloured by 

 tho action of ozone. The bleaching effect is not produced 

 if the papers are thoroughly wetted by immersion in water, 

 and it has been attributed to another form of oxygen named 

 antozene. The analogy of the constitution of visible vapour 

 and spray from a breaking wave or a fountain led him to 

 make some experiments in the vicinity of the fine fountains 

 at the Arnfield and Hollingworth reservoirs in the Man- 

 chester Corporation Waterworks district. At each locality 

 boxes containing ozone papers were placed on the windward 

 and on the leeward side of the fountains. The experiments 

 at both localities showed a marked excess of ozone on the 

 leeward side. The experiments, he thinks, prove that the 

 spray from a fountain on evaporating gives off, or produces, 

 atmospheric ozone and in this respect is similar to ordinary 

 fog or haze. He advances the hypothesis that water exposed 



