120 Scientific Intelligence. 
Jaa 
erous power of coal gas to the olefiant gas, and homologues of the series 
ontained in it. The incorrectness of which view has been — 
1853, i, 438), and by others, and has been recognized, we believe, by — 
every chemist who has latterly made a special study of the technology of 
as making. 
_ Berthelot promises soon to publish the results of his examination of — 
the compounds which acetylene forms with chlorid of copper and with 
nitrate of silver* and of mercury, and of the analogous compounds which 
the last two salts form with olefiant gas. He also alludes to a method of 
isolating olefiant gas, the publication of which can hardly fail to interest 
s makers. 
It is to be hoped that in the same connection. M. Berthelot will make 
some slight allusion to the labors of Edmund Davy, (Annalen der Phar- 
macie, xxiii, 144; from the Records of General Science, Nov. 1836, 
en Ha, 
C,2H,,), which accord with the general formula of the ace ylene series, 
ploy ed. He found further, w 1en a piece of cast iron was submitted 
high temperature, with this mixture, that it was first converted into sth 
* Compare Beettger, Joe. cit., also V oak Sikes : will’s 
Jahresbericht der Chemie, ft 1858, p. ag r, in Kopp and 
: was called klumene by Leo Gmelin, in his k (Caver 
Soc, Ed., viii, 150). o Hand Book (Ca 
