78 Intelligence and Miscellaneous Articled, 



chlorine, to restore its natural whiteness : sulphuric acid, far from 

 decolorizing it, imparts to it the colour of wine-lees ; the concen- 

 trated alkalies render it green when heated, and the alkalies destroy 

 it ; when in water it has but very little odour, but as soon as taken 

 from it, it acquires a most disgusting smell, which is not dissipated 

 by long exposure to the air, at least while it retains a little water ; 

 nor is it got rid of by much washing with cold water, or by long 

 boiling, although in the latter case the greater part of it disappears. 

 Lastly, it becomes perfectly inodorous by thorough drying in a stove, 

 assumes a horny apj)earance, and is reduced to about one-tenth of 

 its weight. — Journ. de Ph. et de Ch., Mai 1849. 



ON GLAIRIDINE. BY M. BONJEAN. 



The author observed that when the sulphurous waters above de- 

 scribed become mixed with rain-w^ter, another vegeto-animal matter 

 appears, to which he has given the name of glairidine. 



The principal characters of this substance are, that it is of a deep 

 gray colour, instead of being colourless, like glairine ; it is inodorous, 

 and remains so even when exposed to the air. Long exposure to 

 the air does not alter its colour ; but if a glass bottle be immediately 

 filled with it, it soon acquires a smell, which in a few days becomes 

 as disagreeable as that of glairine taken from water. If it then be 

 taken from the bottle and exposed to the air, it becomes quite inodo- 

 rous, and dries perfectly in a few days ; on the contrary, it has been 

 shown that glairine does not lose its interposed water till exposed 

 to a heated stove. Glairidine is not decolorized either by any acid 

 or by liquid chlorine. Like glairine, it renders hydrochloric acid 

 yellow on account of the peroxide of iron which it contains. Water, 

 alcohol, oil of turpentine, and the acids, dissolve a small quantity of 

 it ; it is insoluble in aether ; it separates sulphur, but in so minute 

 traces, that to perceive them it is requisite to operate on a great 

 quantity of the matter. The caustic alkalies do not render it green, 

 either cold or hot. If it be thrown on a filter, it retains a little 

 water ; and when afterwards dried on a stove, it loses only two-thirds 

 of its weight. In this state, instead of having a horny appearance, 

 like glairine, it presents a uniform, friable, solid mass, and does not 

 swell in water. The water which runs through the filter is as in- 

 odorous as the substance itself, and it contains a very small quantity 

 of zo'iodine. When decomposed in a glass tube, it exhales the odour 

 of burnt horn, and yields gases which strongly restore the blue colour 

 of reddened litmus. Lastly, glairidine yielded by analysis very evi- 

 dent traces of iodine, which, as already stated, glairine did not. — Ibid. 



ON zo'iodine. by M. BONJEAN. 

 The author has given this name to a new substance from two 

 Greek words, expressive of its azotized nature and its violet colour. 

 In order to obtain it, it is requisite to employ very white glairine, 

 which cannot be procured except when the sulphurous waters are 

 in a state of perfect purity, and nearly at their maximum of sulphu- 

 ration. This substance exists in the state of strongly iridescent scales 

 of a fine deep violet colour ; it has neither taste nor smell ; it is un- 



