85 
Thus, for instance, Warren de la Rue and Hugo Muller* 
found in the Rangoon tar, benzol, toluol, xylol, and cumol 
and hydrocarbons of the formula C„ H )l + 2 . They were, 
however, unable to isolate from these a compound of definite 
composition and boiling point. The rock oil from Selmde, in 
Hanover, consists, according to the investigation of Busenius, 
Eisenstuck,f and Uellsmann,^ of hydrocarbons of the same 
general formula, but they likewise failed to obtain definite 
products. 
Pebal and Freund§ found in the rock oil from Gallicia 
benzol and homologues, carbolic acid and homologues, and 
hydrocarbons which are not attacked by the strongest acids, 
and probably identical with those previously mentioned. 
MICROSCOPICAL SECTION. 
16th February, 1863. 
Mr. Joseph Sidebotham, Vice-President of the Section, 
in the Chair. 
Captain Fletcher, of the ship “ Tigris,” presented a 
portion of harbour mud from Singapore, and five soundings 
from the coasts of Java and Sumatra. 
Mr. R. D. Darbishire presented specimens of mud and 
fossil shells (received through Dr. P. P. Carpenter) from the 
post-pliocene or latest tertiary deposits at Logan’s Farm, 
Mile-end Quarries, near Montreal, Canada, described by Sir 
C. Lyell (“ First Travels in North America,” Vol. II., p. 135), 
and in Papers by Dr. J. W. Dawson in the “ Canadian 
Naturalist,” 1858 and in 1859. Mr. Darbishire, in a note to 
the Secretary, stated that one of the peculiarities of the 
deposit is that it seems to have been formed in a quiet hollow. 
* Jakresberickt, 9, 606. 
t Liebig’s Annalen, 113 — 115. 
X Ibid, 114—279. 
§ Liebig’s Annalen, 115, 19. 
C 
