28 Mr. William Sutherland on the 



tributed by the radicals N0 3 , C10 3> Br0 3 , and I0 3 to (M*Z)*, 

 along with the values reproduced from Table XL, where they 

 were obtained by the surface-tension method : — 





Table XX. 





N0 3 . 



CIO3. Br0 3 . 



I0 3 



36 



4-4 5-0 



63 



37 



36 3-7 





The agreement in the two sets of values is good only for 

 N0 3 , but it should be noted that the value for Br0 3 from 

 Table XL is too small in comparison with that for C10 3 . 

 With 3*6 as the value for X0 3 we can obtain from Table XIX. 

 values for Ag and Tl, namely Ag = 3'4, which is "1 less than 

 Na, while the irregular results for the haloid compounds of 

 Ag would make it about *5 less ; for Tl the value is 4*2. 



To the data for the carbonates, sulphates, and metaphos- 

 phates of the monad metals similar considerations have to be 

 applied as to those for the nitrates. Equation (13) has to be 

 used with a value 28 for Mc in the carbonates of type B 3 C0 3 , 

 33 in the sulphates R 2 S0 4 , and 50 in the metaphosphates. 

 As there are 3 radicals in these types k will be 1/3, and as in 

 the case of RC1 2 we divided our original values of (M 2 /) f by 

 2tV to get true values of (M 2 /)-/2* or XF e , so also in these 

 types we must do the same : thus for the carbonates R 2 C0 3) 



28 



M 2 /=5-8xl(T*X7r— — t — rr. 5 • • • ( 16 ) 

 3x6*4x2*' v } 



for the sulphates B 2 S0 4 , 



M 9 Z = the same with 33 in place of 28, 



and for the metaphosphates the same with 50 in place of 28. 

 These equations give the following values : — 









Table XXL 









T ,. . 



Li. 



9(58 





Car 

 Na. 

 1087 • 



bonates. 

 K 

 1107 





Eb. 

 1110 



Tl. 



546 



M/p.... 



35 





43 



60 





(92) 



66 



sF e :... 



51 





62 



7-6 





97 



6-1 



T 



Li. 



1091 



Sulphates. 



Na. K. 

 1134 (1150) 



927 



Tl. 



905 



Metaphosphates 



Na. Ag. 

 890 755 



M/p... 



50 



54 



66 



58 



74 





82 84 



2K 



7*3 



7-8 



8-9 



7-9 



9*2 





109 107 



