106 ' ATOMIC WEIGHT DETERMINATIONS. 



introduced, so enclosed, into a vessel containing water. 

 The bulb was broken and the chlorine contents titrated with 

 argentic nitrate. The dijfference between the experiments 

 was 0.2 for = 16, Ag = 108, CI = 35.5. The chloride 

 was repeatedly rectified; its boiling point was 59°. {Annal. 

 de CUm. et de Phys., (3,) 65, 1859, 129.) 



J. ScHiEL: 28.01 (0 = 16). 



Determined by two analyses of the tetrachloride. The 

 salt was decomposed with a slight excess of ammonium 

 hydrate and the chlorine titrated with argentic nitrate. 

 The atomic weights of CI and Ag used are not stated. 

 Schiel found 0.6738 silicic chloride = 2.277 argentic chlo- 

 ride, and 1.3092 silicic chloride = 4.418 argentic chloride. 

 [For Ag = 107.93, CI = 35.457, these data give Si = 

 28.13, and 27.89.] {Liebig's Ann., ISO, 1861, 94.) 



SILVER. 



Dulong and Petit, Regnault and others have determined 

 the specific heat of silver and found it in accord with an 

 atomic weight of about 108. {Gmelin-Kraut, I. c.) 



Marcet; Davy; Wenzel; Wollaston. 



Wollaston in his table of equivalents mentions that Marcet 

 found 441 CI = 1350 silver, and Davy the same quantity of 

 chlorine = 1360 silver. Wenzel found 200 sulphur = 1360 

 silver. {Phil. Trans., IO4., 1814, 21.) 



J. J. Berzelius: 108.1S9 (0 = 16); 675.804 (0 = 

 100). 



Berzelius found that 100 silver gave 132.75 argentic chlo- 

 ride. Taking CI = 221.325 he calculates Ag = 1351.607. 

 He expresses uncertainty whether or no this value should 

 not be reduced to one half {Poggend. Ann., 8, 1826, 180.) 



E. Turner : 108 (0 = 16). 



Turner determined the composition of argentic chloride 

 at 100 silver to 132.8 chloride. These numbers are for 



