2 Wilde, On the Atomic Weight of Radium. 



to, is the quantitative determination of the combining 

 proportions of new elements in anticipation of the experi- 

 mental results. 



Hn 



H = I Diff. 

 - 6 



0.0.7 Li = 7 



0-59+ 7* 



-16 



I X 23 . o=Na = 23 



0-98 



-16 



2X 23 — 7 = Ka = 39 



0-86 39 



3 X 23 — 7 = Cu = 62 



8-9 63-3 



4x23 — 7 = Rb = 85 



1-52 85 



5X23-7-Ag =108 



io'6 108 



6x23 — 7 = Cs =131 



1-88 1^2 



7x23-7= — =154 



I2-2t 



8X23-7= — =177 



9X23-7 = Hg=2oo 

 n'6 200 



23 



23 



H2n 



He = 2 Difif. 

 - 6 



o . o . 8 = G1 = 8 



1-64? 9'2 



-16 



I X 24 — o = Mg= 24 



1 74 24 



2X 24 — 8 = Ca = 40 



1-58 40 



16 



-24 



3 X 24 — 8 = Zn = 64 



7-2 65 



-24 



4X24-8 = Sr = 88 



2-54 87-5 



5 X 24 — 8 = Cd =112 



8 '69 112 



6x24-8 = Ba =136 

 375 137 



7x24 — 8= — =160 

 10-13::: 



8x24-8 = Ra =184 



5-o: 



9X24-8 = Pb =208 



1 1 '44 207 



-24 



24 



-24 



24 



24 



* Accepted Atomic Weights. t Specific Gravities. j Estimated. 



