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SELECTED ARTICLES. 
treatment we obtain a resinoid oil, which appears to be analo- 
gous to chlorophylline. 
If these processes be repeated with the intention of obtain- 
ing the aroma of the jonquil, the flowers should be used as 
soon as they have fully opened, in order to avoid, if possible, 
any change in the oil from the action of the air, and its trans- 
formation into the concrete substance. It has been shown, 
that the oil can be procured by a single washing with ether, 
as the aromatic portion is the first that is taken up, and hence 
the subsequent processes of evaporation, &c. can be rapidly 
performed, so as to prevent the oil from being exposed to 
the action of the air for a long time. 
Journ. de Pharm. 
AR^. X. — NOTE ON FUMARIC ACID. By M. Winckler. 
Fumaric Jicid. — Dr. Winckler described some time since 
in Buckner's Repert. Pharm., a peculiar acid existing in the 
juice of the Fumitory, in the form of a fumarate of lime, and 
in small crystalline grains, in the extract of this plant. The 
process he advises in order to obtain it, is to coagulate the 
juice of the fumitory by ebullition, to treat with animal char- 
coal, and to precipitate with acetate of lead. The precipitate, 
after having been well washed, is to be mixed with a great 
quantity of water, and decomposed by means of sulphuretted 
hydrogen. On filtration, a fluid is obtained, which, after due 
evaporation, deposits on cooling a great quantity of crystals of 
fumaric acid. M. H. Demarcay, however, after a careful exa- 
mination and analysis of these crystals, has satisfied himself 
that they are identical with the paramalic acid of M. Pelouze. 
Journ. de Pharm. 
