ATOMIC WEIGHTS 141 



From ratios 2G, Ag, and CI Na = 22.9954, =t .00048 



" 28, Ag, and Br 22.9963, it .0011 



" 3, 41, and CI 22.9964, ± .0017 



" 25, Ag, and CI 23.0120, ± .0003 



" 27, Ag, and Br 23.0415, ± .0009 



" 6 and CI 23.0416, ± .0048 



" 2, 4, and 55 23.0675, ± .0088 



" 3, 42, and CI 23.1692, ± .0050 



General mean, Na = 23.0108, ± .00024 



The first four values, taken by themselves, give a general mean of 

 23.0072, ±.00025. This harmonizes better with the determinations made 

 by Eichards and Wells than the general mean of all. The fifth and sixth 

 values, however, cannot be safely rejected, for their discordance with 

 the others is not explained. The last two values signify little or nothing. 



For sulphur there are six values, as follows : 



From ratios 52 and Ag S = 32.0094, ± .0038 



" 2, .55, and Na 32.0314, ±: .0059 



" 51 and Ag 32.0578, ± .0013 



" 4 32.070, ± .0013 



" 54, Ag, and CI 32.0723, ± .0016 



" 53, Ag. and CI 32.1392, ± .0032 



General mean, 8 = 32.0667, ± .00075 



For nitrogen, the fundamental ratios give eighteen values, as follows: 



From ratios 38 and K N = 13.9938, ± .0011 



" 37 and CI 14.0022, ± .0012 



" 1, 32, Ag, and CI 14.0032, ± .0015 



" 30, Ag, and CI 14.0040, ± .0051 



" 1, 34, Ag, and CI 14.0069, it .0005 



" 3 14.0074, ± .00018 



" 29 and Ag 14.0083, ± .00020 



" 40, K, and CI 14.0107, it .0015 



" 41, Na, and CI 14.0140, it .0009 



" 1, 33, Ag, and CI 14.0151, ± .0005 



" 2, 48, and Ag 14.0209, ± .0014 



" 1, 36, and CI 14.0221, ± .00043 



" 1, 35, Ag, and Br 14.0230, ± .0009 



" 39, K, and CI 14.0279, it .0007 



" 42, Na, and CI 14.0392, ± .0030 



" 31, Ag, K, and CI 14.0500, it .0020 



" 1, 2, 50, Ag, and Br 14.0652, ± .0133 



" 1, 2, 49, Ag, and Br 14.1501, ± .0054 



General mean, N = 14.0101, ± .0001 



The mean is distinctly higher than the atomic weight of nitrogen as 

 determined directl}^, or as derived from the study of silver nitrate. 

 Finally, there are ten values for carbon: 

 10 



