156 
(5) So also the first ketone of the fatty series is methylic aldehyde. 
Di-ethyl ketone being co} ae or CsH,.O, and di-methyl ketone 
one) 1 CH, or C;H.O, and the common difference C:H,, we have 
C;Hi.0O—C.H,=C;H.O, and by analogy, 
C;H,O—C.H,=CH,0 
—- 
Di-methy] ketone. Methylic aideuede 
Dr. Bolton then referred to the derivation of alcohols and 
acids from hydrocarbons, by successive substitutions of 
(OH)y for H, and of O” for Hx After showing the impor- 
tance of the group COOH (carboxyl) to the formation of an 
acid, he maintained that the group CHOH is equally neces- 
sary to the existence of an alcohol, and proposed for this 
group the name of carbhydryl. 
He then explained, using Kekule’s six-carbon-atom-ring, 
why the so-called carbolic acid, or phenol, is no true alcohol, 
the group carbhydryl being wanting. Phenols therefore are 
bodies peculiar to the aromatic group, and have no analogues 
in the fatty group. Ringing the changes on the graphic 
formulz, he showed how the true alcohols and acids of the 
aromatic group are derived, viz.: by effecting the substitu- 
tions in the methyl group. Thus benzoic acid is really de- 
rived from toluol, which is methyl-benzol. He alluded to 
the relation which phthalic and salicylic acids bear to this 
series. 
Pror. SEELEY made some remarks on the importance of 
Dr. Bolton’s communication, saying that speculations of a 
similar character have been a fruitful source of discovery in 
organic chemistry. 
After some conference on the work done by the society 
during the past -year, the Lyceum adjourned, as usual, till the 
first Monday evening in October. 
