210 



Mr Heycock, On a form of Apparatus [Nov. 24, 

 CHLORINE. 



1 cc. of Na 2 S 2 3 = 0-208. cc. of CI at 0°C. and 760mm. 



Hence the largest quantity of CI diffused in one experiment 

 was 5"7l cc. 



OZONE. 



1 cc. Na 2 S 2 3 = 0-208. cc. of Ozone at 0°C. and 760 mm. 



if we accept the usual reaction for this gas. 



