A REVISION OF THE ATOMIC WEIGHT OF IODINE. 



lOI 



bromine in the iodine, for silver chloride or bromide, on account of their greater 

 solubility, would have produced much more marked precipitates. 



The specific gravity of soUd iodine is assumed to be 4.933,^ hence a vacuum 

 correction of +0.000099 is applied to every apparent gram of iodine, as well as 

 one of —0.000031 to every apparent gram of silver. 



RESULTS. 



The Atomic Weight of Iodine. Series III. Ag: I. 



As is to be expected, the average of this series is slightly higher than that of 

 the previous one, and undoubtedly represents more closely the true value of 

 the atomic weight of iodine. Nevertheless, the investigation was not allowed 

 to rest at this point. 



* Ladenburg: Ber. d. d. Chetn. GeselL, 35, 1256 (1902). In the original publication of this 

 paper a slightly higher vacuum correction was employed, owing to an incorrect assumption as 

 to the specific gravity of the weights, which are here taken at 8.3. 



