ATOMIC WEIGHTS 



137 



cussion of them may well be deferred. There is, moreover, one practical 

 disadvantage in it; namely, that the specific influence of each individual 

 ratio is more or less obscured, except to the computer himself. The 

 extent to which a given ratio affects the final results is not readily seen 

 in a general combination of all the data, whereas for present purposes 

 some such insight is likely to be helpful in guiding future work. An 

 approximate method of reduction is therefore adopted here, which will 

 give highly probable values for the several atomic weights, even if it 

 does not yield the " most proljaijle values " of the method of least squares. 

 The uncertainties will not be large, and jjerhaps no larger in reality than 

 if the rigid mathematical procedure were followed implicitly. 



The 55 ratios may now be tabulated, and numbered for reference, as 

 follows : 



(1). H = 1.00779, ± .00001 

 (2). C = 12.0000, ± .00029 

 (3). N = 14.0074, ± .00018 

 (4). S = 32.070. ± .0013 

 (5). CI = 35.4643, ± .00039 

 (6). NaCl = 58.500, ± .0048 

 (7). KC1 = 74.593, ±.00086 

 (8). KBr = 119.249, ± .0596 

 (9). KI = 165.590, ± .0384 



(10). AgCl = 143.390, ± .0060 



(11). AgBr = 187.884, ±.0133 



(12). Agl = 234.734, ±.0126 



(13). l.0,:2Ag: :100:64.6229, ± .0001 



(14). Ag: CI:: 100: 32.8606, ±.00031 



(15). Ag: Br:: 100: 74.0802, ±.00029 



(16). Ag:I::100:117.6351, ±.00034 



(17). AgCl:AgBr: : 100: 131.0172, ± .00012 



(18). AgCl:AgI: : 100: 163.8118, ± .00038 



(19). AgI:AgBr: : 100: 79.9799, ± .00028 



(20). Ag:KCl: : 100: 09.1138, ± .00011 



(21). AgCl:KCl: : 100: 52.0163, ± .00018 



(22). Ag:KBr: : 100: 110.3193, ± .00033 



(23). AgBr:KBr: :100:63.3727, ± .0003 



(24). Ag:KI::100:153.800, ± .0178 



(25), Ag:NaCl: : 100: 54.1995, ± .00015 



(26). AgCl:NaCl: : 100: 40.7803, ± .00028 



(27). Ag:NaBr: :100:95.4405, ± .0007 



(28). AgBr:NaBr: : 100: 54.8010, ± .0005 



(29). Ag:N03: : 100: 57.479, ± .000095 



(30). AgN03:AgCl: : 100: 84.3743, ± .0025 



(31). AgN03:KCl: : 100: 43.8759, ± .00046 



(32). AgN03:NH,Cl: : 100: 31.488, ± .0006 



(33). Ag:NH,Cl: : 100: 49.5965, ± .00038 



(34). AgCl:NH,Cl: :100:37.3218, ± .0003 



(35). Ag:NH,Br: :100:90.8175, ± .00065 



(36). NH3:HC1: :100:213.934, ± .0053 



(37). C1:N::100:39.489, ±.0033 



