Intelligence and Miscellaneous Articles. 463 



M. Pelletier has examined this supposed salt of jalapia, and finds 

 that it contains no peculiar vegeto-alkaii whatever, but that it is com- 

 posed of sulphate of lime and sulphate of ammonia. M. Pelletier re- 

 marks that if, as Mr. Hume supposes, it has acted as a purgative, the 

 effect must have been produced by a "forte prevention," which has 

 been known to be the case with other inert substances. — Journal de 



Pharinacie, Aug. 1827. 



GLAUCOLITE, — A NEW MINERAL SPECIES. 

 This substance was first described by Mr. Sokoloff in the Russian 

 Journal of Mines *. It is found massive, presenting traces of cleavage. 

 The fracture is splintery and uneven ; lustre vitreous ; colour laven- 

 der-blue, passing into green. It is translucent on the edges. Hard- 

 ness =5'0.,.6-0. Specific gravity =2721 Bergemann ; =2-9 John. 

 According to Dr. Bergemannf, it consists of 

 Silica . , . 54-58 

 Alumina . . 2977 

 Potash . . 4-57 

 Lime . . . 11-08 



100- 



Before the blowpipe it melts difficultly on the edges, but is soluble 

 in borax and salt of phosphorus. It loses its colour. 



It occurs in compact felspar and granular limestonCj with talc, near 

 Lake Baikal, in Siberia. 



EFFECTS OF OIL OF CROTON ON THE EYE. 



M. Commensuy of Rheims, accidentally received a few drops of the 

 oil of Croton in the eye : he washed it plentifully with water, but not- 

 withstanding this he suffered extreme pain, and in less than a quarter 

 of an hour his eye became very much inflamed, as well as the side of 

 the face ; he suffered noise in the ears and a kind of vertigo, for he 

 could not stand without the fear of falling. He suffered horribly during 

 fourteen hours; but by the application of leeches, &c. the inflammation 

 was reduced, and in a week he was able to attend to business, the eye 

 remaining only a little weak. — Journal de Pharmacie. 



CHLOROCYANIC ACID. 

 M. Serullas has obtained this compound, which he terms cyanuret 

 of chlorine, in a separate state, and perfectly pure, with great facility 

 by the following process. Moisten cyanuret of mercury with chlorine, 

 stop the flasks, and put them in a dark place ; in eight or ten hours 

 the contents are entirely converted into perchloride of mercury and 

 cyanuret of chlorine. This compound is extremely deleterious ; very 

 soluble in water, and still more so in alcohol : it suffers no change in 

 these fluids, and maybe separated from solution in water by passing 

 it over chloride of calcium into bottles placed in a freezing mixture, 

 where it becomes solid. 



• Pog^endorfs Anmdcn dcr Phijdk u. Chcmic, 1827, Number ii. p. 267. 

 f Von Lconhard's llandbuch dcr Ort/Aiognosic, 2d Edit. [). 741. 



One 



