10 MCDOUGALL AND HowLES, Nitric Acid from Air. 



Fig. 5. The lettering employed is the same as in the 

 preceding drawings. 



F^S- 5- 



The first experiment conducted in this apparatus 

 extended over a period of 22^ hours. The power con- 

 tinuously used was 225 watts. On analysis, it w'as found 

 that there was an increase in the products from the condens- 

 ing apparatus. The production of nitric acid had proceeded 



