98^ THE ATOMIC WEIGHTS. 



GIO. BaSO^. Ratio. 



.3163 grm. 2.9332 grm. 927-031 



.2872 " 2.6377 " 918.419 



.2954 " 2.7342 " 925-592 



.5284 " 4.8823 " 902.946 



Mean, 918.497, ± 3.624 



Klatzo's* figures are as follows, with the third column 

 added by the writer : 



GIO. BaSO^. Ratio. 



-2339 g''"- 2.1520 grm. 920.052 



.1910 " 1-7556 " 919.162 



.2673 " 2.4872 " 930-490 



.3585 " 3.3115 " 923-710 



.2800 " 2.5842 " 922.989 



Mean, 923.281, i 1.346 



Combining these series into a general mean, we get the 

 subjoined result : 



Awdejew 921.316, rb 1-577 



Weeren 918.497, d- 3.624 



Klatzo 923.281, zh 1.346 



General mean 922.164, =h 0.985 



Hence GIO = 25.224, ± .269. 



Debrayt analyzed a double oxalate of glucinum and am- 

 monium, G1(NH4 )2C4 08. In this the glucina was estimated 

 by calcination, after first converting the salt into nitrate. 

 The following percentages were found : 



11. 5 



II. 2 



11. 6 



Mean, 11.433, d= .081 



The carbon was estimated by an organic combustion. I. 

 give the weights, and put in a third column the i)ercentages 

 of CO 2 thus obtained : 



* Zeitschrift fiir Anal. Chem., 8, 523. 1869. 



f Ann. de Chim. et de Phys., (3,) 44, 37. 1855. 



