Volumes, and Chemical Characters of Liquids. 

 Table IV. 



419 



Formula. 



V T . 



T. 



T" 



Br 2 



53-48 

 56-18 



78-01 

 90-28 



86-29 



88-21 



9334 



108-28 

 53-84 

 94-37 

 96-72 



101-37 

 107-38 

 116-11 

 106-25 



103-68 



108-43 



120-8 



124-47 



131-07 



332-27 

 374-3 



351-8 

 41M2 



342-95 



388-9 



348-95 



445-9 



333-4 



403-21 



496-5 



380-23 

 410-6 

 398-12 

 400-19 



349-74 



377-07 

 330-57 

 409-4 

 386-9 



•1609 

 •1501 



•2217 

 •2196 



•2516 

 •2268 



•2675 

 •2428 

 •1615 

 •2340 

 •1948 



•2666 

 •2615 

 •2916 

 •2655 



•2964 



•2876 

 •3654 

 •3040 

 •3388 



IC1 



S001 2 



S 2 C1 2 



S0 2 C1 2 



Cr0 2 Cl 2 



PC1 3 



PBr 3 



AsF s 



As01 3 



SbClg 



POOL, 



POBrCl 2 



PSCI3 



VOCI3 



CC1 4 



CBrCl 3 



SiCl 4 



Ti01 4 



Sn01 4 



It is evident from these figures that the apparently simple 

 relation which obtains among the compounds of hydrocarbon 

 radicals with elements of the same group does not extend to 

 compounds of elements of one group with elements of another 

 group. In some cases the ratio has nearly the same value in 

 similar compounds, e.g. SOCl 2 and S 2 C1 2 , or POCl 3 , POBrCl 2 , 

 and YOCI3 ; but in others there is a large variation, as in the 

 simple halogen compounds of the phosphorus group. But the 

 law T , if fully understood, might be found to explain and em- 

 brace these cases. 



It appears, then, from a comparison of Table IV. with 

 Tables I. and II., that similarity of chemical constitution is 



.V 



not the only condition required for equality of the ratio y-. 



Some clue may be obtained to the more precise nature of the 

 relation by an examination of the very interesting work on 

 benzene and its monohalogen derivatives published last year 

 by Professor Sydney Young (Trans. Chem. Soc. lv. p. 486). 



