54 



REPORT 1889. 



These journals were found to contain 675 papers on tlie subject of 

 Solution, and these papers may be classified as follows : — 



The Committee have to thank Miss Lloyd and Mr. A. J. Cooper, of 

 Mason Collegje, Birmingham, for their assistance in searching the 

 ' Annales de Chimie et de Physique.' The Committee desire reappoint- 

 ment. 



Report (Provisional) of a Gommittee, consisting of Professors 

 M'Leod and W. Eamsay and Messrs. J. T. Cundall and W. 

 A. Shenstone (Secretary), appointed to investigate the Influence 

 of the Silent Discharge of Electricity on Oxygen and other 



Gases. 



The Committee was appointed to ascertain, if possible, the mode of action 

 of the silent electric discbarge in the ozonisiug of oxygen ; to investigate 

 the influence of such conditions as temperature and pressure on ozonifi- 

 cation more exactly than has hitherto been done. Also to gain, if possible, 

 further and more direct evidence concerning the molecular weight of 

 ozone, and to study the action of the discharge on other gases. 



In previous reports the prejoaration and storage of veiy pure oxygen 

 has been described. It has been shown that very pure oxygen is readily 

 converted into ozone, and that in some respects the proj^erties of ozone 

 when thoroughly dry differ from those of the same gas when it is con- 

 taminated with a trace of water vapour. 



Although a considerable amount of work has been done since our last 

 report was presented, vai-ious difficulties and several unavoidable accidents 

 have prevented us from completing any part of our work. Immediately 

 after the meeting at Manchester two members of the Committee pro- 

 ceeded to make quantitative experiments with specimens of pure oxygen. 

 In these experiments known volumes of the gas at 0°C. and at known 

 and nearly uniform pressures were submitted to the silent electric dis- 



