Intelligence and Miscellaneous Articles* 237 



that eudnophite is a dimorphous species of analcime.— Pogg. Ann, 

 tome 79 ; Bibliotheque Universelle, Juin 1850. 



ON THE HYPOSKLERITE OF ARENDAL. 

 BY M. C. RAMMELSBERG-. 



Hyposklerite is a mineral of a felspathic appearance, which has 

 been described by M. Breithaupt. An analysis recently made by 

 M. Hermann seems to separate it completely from the felspars. 

 M. Rammelsberg has repeated the analysis with a specimen which 

 he received from M. Breithaupt himself. He did not find in it any 

 traces of cerium and lantanium indicated by M. Hermann, and his 

 results agree exactly with the composition of an albite, mixed with 

 about 5 per cent, of pyroxene, a supposition which is supported by 

 the deep blackish green colour interspersed through some parts of 

 the hyposklerite. It appears therefore that this mineral should not 

 constitute a distinct species. — Ibid. 



ON THE EXISTENCE OF IODINE IN BEET-ROOT. 



After the discovery of the existence of so important a substance 

 as iodine in so many bodies, M. Lamy thought it might be in- 

 teresting to state how he had ascertained its presence in the beet- 

 root of the Grand Duchy of Baden. 



In November last M. Lamy received from M. L. Lintz, chemist 

 at the sugar manufactory of Waghausel in the Grand Duchy, a spe- 

 cimen of beet-root potash for examination, thinking that it contained 

 iodine. 



Some fragments were accordingly dissolved in distilled water and 

 saturated with nitric or sulphuric acid ; the solution was of a yellow 

 colour and exhaled the odour of iodine ; by the addition of solution 

 of starch, it became of an intense blue colour, which disappeared by 

 heat and reappeared on cooling. 



After frequently repeating this experiment, and being certain of 

 the existence of an alkaline iodide in the potash of Waghausel, M. 

 Lamy examined successively the various products of the manufacture 

 of sugar of this locality, beginning with the saline matter, molasses, 

 then taking the refined sugar, unrefined sugar, and cossettes, or 

 beet-root cut into small parallelopipeds and dried. 



The saline matter was treated with hot water as long as it dis- 

 solved anything ; the aqueous solution was evaporated to dryness, and 

 the residue treated with highly rectified alcohol, the solution being 

 evaporated to dryness ; the residue was divided into two portions ; 

 one of these was treated with sulphuric acid and solution of starch, 

 and the other was tried by M. Reynoso's process ; in both cases 

 the existence of iodine was evident. 



The ash of the molasses was boiled in distilled water ; a portion 

 of the filtered liquor, saturated with nitric or sulphuric acid, gave, 

 like the potash, a fine blue colour on the addition of solution of 

 starch; another portion, on spontaneous evaporation, left a cry- 

 stallized residue which was treated with hot alcohol of 40 degrees 



