348 Mr. Gervaise Le Bas on the 



Molecular Volumes of Simple Substances. 



Compound. 



N = = N* 



N0 2 .N0 9 



0=N— CI 



NH 3 



NC1 3 



N = C— C = N 



H— = 0— H 



<C = 



0=C=0 



o=s=o 



CC1 4 



C0Cl 2 (0 = C.Cl o ) 

 CCUS (S=0.C1 2 ) 

 PCl" 



Foci 3 "(6=p7ci 3 ) 



PSCI3 (S = P.Cl 3 ) 



POBrCL 



CCl 3 Br .". ... 



HgCl 2 



HgBr 2 



Hgl 



C3K-CI 



C 3 H-Br 



C,H 7 I 



CBIC1, 



CHBr 3 



C 9 H 5 .SH 



(0 2 H 5 )S 



M.V. 



39- 



46" 



26- 



80" 



60' 



23' 



22- 



33- 



43' 



103 



70- 



81- 



93 



101- 



116 



107- 



108- 



63 



75' 



92 



91" 



98- 



106 



84- 



103- 



77 - 



121- 



2A.V. 



39-5 



64-4 



46-0 



26-7 



819 



60-8 



24-0 



23-1 



32-4 



42-2 



103-2 



700 



81-1 



93-3 



101-7 



115-5 



107-1 



108-6 



631 



75-9 



92-9 



92-1 



97-5 



1070 



81-8 



104-0 



77-3 



121-6 



Remarks 



O 8'3 



O" 11 



Br 27-5 



S=25' 



* Note. — Evidence has since been adduced that both N 2 and N 2 3 are Ring 

 compounds (see Journ. Chein. Soc). 



The following compounds which have been investigated 

 by Thorpe deserve special treatment, because according to 

 the old numbers they are possessed of constitutions quite 

 out of harmony with chemical evidence generally and their 

 genetic relations : — 



Thionyl Chloride, 

 CI 

 I 



I 



CI 



S 25-6 

 0" 8-3 

 2 CI 44-2 



Calc. 78-1 

 Obs. 78-0 



Carbonyl Chloride. 



CI 

 1 



1 



c=o 



1 



k 



C 14-8 

 1.1-0 

 CL 44-2 



Calc. 70-0 

 Obs. 70-1 



