206 
ORIGINAL COMMUNICATIONS. 
and part of the hydrogen may unite to form the compound 
radical, mesitylene, while the remaining hydrogen and oxygen 
unite to form water; the mesitic ether and alcohol will then 
be considered as respectively the hydrate and bi-hydrate of 
mesitylene. On the other hand, the carbon and hydrogen of 
the mesitic ether may unite to form a hypothetical radical, 
consisting of C 6 H 5 , when mesitic ether would be an oxide of 
this radical, and mesitic alcohol a hydrated oxide. Mr. Kane 
considers this latter theory as most correct, and denominates 
this hypothetical radical mesityl. 
The following list contains the substances described by Mr. 
Kane, together with the formula of their composition : 
Mesitylene, C 6 H 4 . 
Mesitic ether, C 6 H 5 0, or hydrate of mesitylene, C 6 H 4 + HO, 
or oxide of mesityl, C 6 H 5 -f 0. 
Mesitic alcohol, C 6 H 6 2 , or bi-hydrate of mesitylene, 
C 6 H 4 + 2HO, or hydrated oxide of mesityl C 6 H 5 +0 + HO. 
Hydrochlorate of mesitylene, C 6 H 4 + 01H, chloride of me- 
sityl, C 6 H* + C1. 
Hydriodate of mesitylene, C 6 H 4 + IH, iodide of mesityl, 
C 6 H 5 + I. 
Sulphate of mesitic ether, C 6 H 5 + S0 3 , or sulpho-mesitylic 
acid. 
Bi-sulphate of mesitic ether, C 6 H 5 0-f2S0 3 , or persulpho- 
mesitilic acid. 
Phosphate of mesitic ether, C 6 H 5 + P 2 5 , phospho-mesi- 
tylic acid. 
Ptelyl, C 6 H 3 , a hypothetical radical. 
Chloride of ptelyl, C 6 H 3 C1. 
Iodide of ptelyl, C 6 H 3 I. 
Hyponitric oxide of ptelyl, C 6 H 3 4 N, or C 6 H 3 + N0 3 . 
Mesitic aldehyd, C 6 H 4 2 . 
Mesitic chloral, C 6 H 4 2 C1 2 . 
Chloride of Mesityl — Hydrochlorate of Mesitylene. 
This compound it is difficult to obtain in a pure state; when 
liquid hydrochloric acid is mixed with mesitic alcohol, it does 
