484 Mr. W. Sutherland on Molecular Force 











Table VIII. 













MgCl 2 . 



CaCl 2 . 



CaEr 2 . 



Cal 2 . 



SrCl 2 









•045 

 1-035 



7-588 

 1-09 



•053 

 1*042 

 7-599 

 1-04 



•091 

 1-077 

 7563 



•71 



•128 

 1-106 

 7-514 



•67 



•074 









1-064 









7-599 



^aflp^k^f 



•76 



(M a 



H 2 )h .... 





6-8 



7-5 



8-3 



9-6 



8-2 









8-1 



8-0 



8-7 



9-9 



7-6 









BaCl 2 . 



ZnCl 2 . 



CdCI 2 . 



CdBr 2 . 



Cdl 2 



p 2 . 







•095 



•064 



-084 



•120 



•155 









1088 



7612 



•62 



1-056 



7-551 



•66 



1-078 



7-588 

 •58 



1-113 



7-514 



•46 



1142 









7-452 



A a 2*/p 2 (i A i 



A)* 



•48 



(M 2 



V h 





8-9 



5-9 



7-5 



8-5 



91 









7'5 



8-0 



7-4 



75 



93 



Here the ratio in the last row agrees well with the values 

 for the compounds of Naand K with monobasic acid radicals; 

 the mean value of the ratio for all the metallic compounds 

 having a value near 8 is 8'5, and for compounds of the monad 

 metals with the dibasic acids C0 3 and S0 4 it is 4*4, which is 

 nearly one-half of 8 # 5. The value 8'5 obtained from Rontgen 

 and Schneider's and Valson's experiments being larger than 

 7*25, would, if used in place of the 7*25, increase our 

 factors *56 and *38, but as in the equations (10) and (11) we 

 have used them only in the small term, the difference caused 

 by the alteration may be neglected for the present. 



Special interest would attach to the case of compounds of 

 the type ZnS0 4 , where a dyad metal is combined with a 

 dibasic acid, but a reference to Table III. will show that c is 

 so small that no great reliance can be placed on its value 

 unless derived from a specially accurate and carefully checked 

 set of experiments made for the purpose. But if we take the 

 values of b and c as they stand in Table III. for MgS0 4 and 

 ZnS0 4 , and make the same comparisons as for other com- 

 pounds, we get : — 



Table IX. 



MgS0 4 . ZnSO,. 



MJp 2 44 50 



(M 2 %) x >/2t... 6 8 5-8 



^M,(M 2 /p 2 )-K(M 2 2 / 2 )5 18-7 23-4 



c{ P JaJ)M 2 (M 2 /p 2 )-l+(M. 2 2 l 2 )5 1-95 '75 



The values of (M 2 2 / 2 )V-- are given on the assumption that 

 for this type of compound they are the sums of parts Y r /2 



