378 Miscdlaneous Intelligence. 



It ought, however, to be noticed that M. Serullas considers the 

 body as a triple compound of carbon, hydrogen, and iodine, 

 analogous to the one described by Mr. Faraday, as do also 

 I Sig. Frisiani and Ferrari, but they have given no precise expe- 

 riments on the subject. A proportion of hydrogen would make so 

 small a part of the weight of the substance as easily to escape 

 notice, unless carefully looked for. — Giornale di Fisica, vi. 65. 



An elaborate paper has also appeared on this subject, by M. 

 Serullas, in the Annates de Chimie, xxii. 172; for a full ac- 

 count of which, see the Foreign Science, p. 297. By his analy- 

 sis, it appears to be a triple compound, and not an iodide of 

 carbon ; and it is remarkable, that the composition he has given 

 is as nearly as possible that of the compound, described and 

 analyzed by Mr. Faraday. — See Vol. xiii. p. 4'^9. 



4. Triple Compounds of Chlorine. — M. Despretz has read a 

 memoir on this subject to the Academy of Sciences; the liquids 

 •which principally engaged his attention were those produced by 

 the action of chlorine on olefiant gas, alcohol, and ether. The first 

 of these liquids has been considered as a compound of equal 

 volumes of chlorine and olefiant gas, a result which was con- 

 firmed by direct experiment. As to the liquid formed by the re- 

 action of chlorine on alcohol, it proved to be a compound of 

 one volume of chlorine and two of olefiant gas. The two liquids 

 obtained by chlorine from ether have not been so accurately 

 examined ; but one of them is considered as anew compound of 

 chlorine and olefiant gas. 



In examining the action of olefiant gas on the chlorides of 

 sulphur and iodine, M. Despretz observed some remarkable re- 

 sults. The chloride of iodine gave two substances, the one a 

 colourless liquid with an agreeable taste and smell, and crystal- 

 lizing in plates at 32°; the other resulting from the action of a 

 greater quantity of olefiant gas, was white, solid, and crystalline. 



With chloride of sulphur, a viscid liquid was produced, more 

 fixed than water, of a disagreeable odour, and difficultly com- 

 bustible. — Ann. de Chim. xxi. 437. 



5. Action of Chlorine on Muriate of Iron, ^c. — M. Van Mons 

 saturated a concentrated solution of proto-muriate of iron with 

 chlorine ; it became of a deep brown colour, did not give out the 

 odour of chlorine, tasted very astringent, and slightly acid, 

 and sweet. After some time, golden-coloured crystals formed 

 in the solution, and chlorine was developed in great abundance. 

 These crystals liquefied in the air, and could not be again crys- 

 tallized. 



Gmelin, by passing chlorine through a solution of ferro-prus- 

 siate of potash, obtained a salt in fine rose-coloured crystals. 

 It was composed of two proportions of prussic acid, one pro- 

 portion of potash, and half a proportion of protoxide of iron. — 

 Giornale di Fisica. 



