142 The Liter aMcre of Ozone. 



ble by atomic oxygen ; whilst, on the other hand, atomic oxygen, 

 under the conditions referred to, can produce not only these 

 chemical changes, but at the same time, and by a similar action, 

 ozone itself. 



The proof of this statement is set forth in a paper which the 

 author published in the Journal of the American Chemical So- 

 ciety for 1879, p. 232, and subsequently in the Proceedings of 

 the German Chemical Society. 



It was there shown that carbon monoxide would undergo con- 

 version into carbon dioxide, under the same circumstances as 

 would bring about the conversion of ordinary oxygen into ozone : 

 that is to say, when a mixture of carbon monoxide and air was 

 subjected to the action of moist phosphorus. Later in the same 

 year, I was induced by the theoretic importance of the subject, to 

 study it anew, and to endeavor to learn whether the production of 

 the carbon dioxide in this experiment was due to the action of 

 ozone, or whether it was due to the production in the first place of 

 atomic oxygen, and the subsequent combination of this atomic 

 oxygen on the one hand with carbon monoxide to form carbon 

 dioxide, and on the other hand with oxygen to form ozone. 



Whether in chemical language, the action was : 



(1) O, + CO = CO, + o, 

 or, as a first step, 



(i) 0, - + 



and then, as second steps occurring simultaneously, 

 (3) +C0 = C0 2 , and + 2 = 3 

 In this second series of experiments (ibid., p. 450) I employed 

 oxygen ozonized by the ozonizing battery to the extent of 72 

 mgrms. of ozone per liter, while in the earlier experiments the 

 percentage did not exceed 5 mgrms. per liter. But no produc- 

 tion of carbon dioxide took place, however long the carbon mon- 

 oxide and ozone remained in contact. Furthermore, when car- 

 bon monoxide and oxygen were separately submitted to the elec- 

 tric effluve, and then brought together, no carbon dioxide was 

 formed. But when the two gases were first brought together in 

 suitable proportion, and then the mixture submitted to the elec- 

 tric effluve, carbon dioxide was produced in quantities readily 

 admitting of quantitative measurement. 



