152 ABSOLUTE ATOMIC WEIGHT. 



entire section of chemistry (Troost, A. Gautier, Moissan, 

 Ditte, Lemoine), represented by Moissan as " rapporteur." 

 See Comptes Rendus, T. 130, pp. iiio-ini; 1900. 



It is stated in this report that the determinations of Ram- 

 say, open to objections, made this new research desirable. 



Thereby this section, in recommending the award, assert 

 that the work of H. Gautier is superior to that of Ramsay. 



They finally admit 11.01 as the value, and accentuate the 

 special discussion of the " probable errors " by H. Gautier. 

 See p. 34, supra. 



If this work by H. Gautier is superior to that of Ramsay, 

 we ought to remove that name from the head of this chapter 

 on boron. Let us examine the work of H. Gautier, pro- 

 duced under Moissan. 

 Henry Gautier, 1899. 



1. SULPHIDE: Change to n.i. 

 602 Sa : Ba O4 S = 1 18 : 699 = o. 16 SSi 20 high. 



Det. 4, Extr. 897 874; 23. Mean 4 high. 



2. CARBIDE : 



Boe C : C 02 78 : 44=i-77 273 2360 high. 



Det. 2, Extr. 293 224; 69. Mean 15 low. 



3. BROMIDE: 



Bo Bra : 3 Ag Br 251 : 564 = 0.44 504 10 high. 



I. Det. 5, Extr. 516 505; n. Mean 8 high. 



II. Det. 4, 515 509; 8. " 9 high. 



4. CHLORIDE: 



Bo Cls : 3 Ag Cl =z 117.5 : 43-5 :: = o - 2 7 2 94 20 high. 



Det. 6, Extr. 292 279; 13. Mean 10 low. 



Looking at the determinations as equivalent (which they 

 are not) we get, as a first, general (though not exact) view, 

 the following estimate : 



Analytical Final Excess. Atomic Weight, 



No. Det. Excess. High. Low. Mean Excess. 



144 high 16 0.020 high. 



2 2 15 low 30 0.000 low. 



398 high 72 0.118 high. 



4 6 10 low 60 0.050 low. 



Sums 88 90 



Practically equal, high and low, hence final excess zero, 

 and Bo equal to standard 11, exactly. 



