MAGNESIUM. 



143 



MgCl*. 



L 33550 

 I.5I60I 



1.40664 

 1.25487 



AgCl. Ratio. 



4.01952 33-225 



4.5 6 3 6 9 33-219 



3.98528 33.226 



4.23297 33-231 



3.77670 33 227 



Mean, 33.226, .0013 



The remaining series of experiments, three in number, relate to the ratio 

 2Ag : MgCl 2 , which was earlier investigated by Dumas. For the elaborate 

 details of manipulation the original memoir must be consulted. I can 

 give little more than the weights found, and their reduction to the usual 

 form of ratio, Ag 2 : MgCl 2 : : 100 : x : 



MgCl v 



2.78284 

 2.29360 

 2-36579 



Second Series. 



Ag. ' 

 6.30284 

 5.19560 

 5.35989 



Ratio. 

 44.152 

 44.145 

 44.13 



Mean, 44.142, .0043 



This series gives slightly higher results than the others, and the 

 authors, for reasons which they assign, discard it : 



Third Series. 



MgCl*. 



1.99276 



1.78870 

 2.12832 



2.51483 

 2.40672 

 1.95005 



4-05256 

 4.82174 

 5.69714 

 545294 

 4.41747 



Ratio. 



44.^31 

 44.138 

 44. 140 



44.I4I 



44- H4 



Mean, 44.138, =b .0013 



The fourth series, because of the experience gained in the conduct of 

 the preceding determinations, is best of all, and the authors adopt its 

 results in preference to the others : 



Fourth Series. 



Ag. Ratio. 



4.60855 44-136 



4.32841 44.138 



4.75635 44.137 



4.12447 44.137 



4o5 I 5 I 44-138 



2.51876 44.138 



Mean, 44.137, db .0003 



2.03402 

 1.91048 



2.09932 

 1.82041 

 1.92065 

 1.11172 



