OXYGEN. 29 



First Series. Second Series. 



.089904 .089977 



.089936 .089894 



.089945 .089987 



.089993 .089948 



.089974 .089951 



.089941 .089960 



.089979 .090018 



.089936 .089909 



.089904 .089953 



.089863 .089974 



.089878 .089922 



.089920 .090093 



.089990 .090007 



.089926 .089899 



.089928 .089974 



.089900 



Mean, .089934, .000007 .089869 



Corrected, .089938, .000007 .090144 



.089984 



Mean, .089967, .000011 

 Corrected, .089970, d= .000011 



In the second group of experiments, the hydrogen was weighed in 

 palladium before transfer to the calibrated globe ; and in weighing, the 

 palladium tube was tared by a similar apparatus of nearly equal volume 

 and weight. After transfer, which was effected without the intervention 

 of stopcocks, the volume and pressure of the gas were taken at the 

 temperature of melting ice. A preliminary set of measurements was 

 made, followed by three regular series ; of these, the first and second 

 were with the same apparatus, and are different only in point of time, 

 a vacation falling between them. The last series was with a different 

 apparatus. The data are as follows, with the means as usual : 



Preliminary. Third Series. Fourth Series. Fifth Series. 



.089946 .089874 .089972 .089861 



.089915 .089891 .089877 .089877 



.089881 .089886 .089867 .089870 



.089901 .089866 .089916 .089867 



.089945 .089911 .089770 .089839 



.089856 .089846 .089874 



Mean, .089918, .089912 .089864 



.0000271 .089872 Mean, .089875, .089883 



Corrected, .089921 =b .0000187 .089830 



Mean, .089883, Corrected, .089880 .089877 



.0000049 .089851 



Corrected, .089886 



Mean, .089863, 

 rb .0000034 

 Corrected, .089866 



