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SELECTED ARTICLES. 
led the author to make use of this acid in the preparation of 
the iodurets of potassium and sodium, and of the hydriodate of 
ammonia, by passing through the alkaline solutions the pro- 
duct of the reaction between the vapours of iodine and the oil 
of turpentine. — The apparatus which M. Guyot has employed, 
and which permits, according to his account, of saturating 
some ounces of concentrated alkaline solution with a small 
quantity of iodine, consists in bringing together in a globe 
with three tubulures, from one side the vapour of the oil of 
turpentine, and from the other the vapour of iodine, and then 
conducting the product of the reaction through an alkaline 
solution, by means of the third tubulure. 
Although it is very likely, that iodine, in its reaction with 
the essential oils, does not solely unite with their hydrogen 
and liberate their carbon, we think that the society, in thank- 
ing M. Guyot for his interesting communication, ought to re- 
quest him to examine some other products which he has ob- 
served in the course of his experiments, in order to complete 
the work which he has commenced; as for instance the 
spirit of balsamic resin, which he has noticed in the product 
of the distillation, and a white flocculose matter which is se- 
parated with the ioduret of potassium by saturating the hy- 
driodic gas obtained in this way. A new examination of these 
products, as well as their elementary analysis, may perhaps 
demonstrate that the iodine in its reaction with the essential 
oils, is substituted for the hydrogen to form new combinations, 
as has already been observed to be the case with chlorine, in 
certain organic compounds. 
While expecting that M. Guyot will publish some new ex- 
periments which we would desire him to make, we recom- 
mend the society to insert in its Journal, the note addressed 
to it by this pharmaceutist. 
Lassaigne. Journal de Chemie. Med. 
