160 Progress of Foreign Science. 



But in admitting, with M. Berzelius, that the anhydrous prussiate 

 contains potassium, we have, 



Cyanogen . . , 0.4291 



Iron .... 0.1442 



Potassium . . . 0.415 



0.9883 



a result as near as possible to the weight employed. He proved 

 by a subsequent experiment with oxide of copper and fused 

 boracic acid, heated together, that the water which appeared in 

 decomposing the triple prussiate, was derived from the boracic 

 acid, for the quantity of moisture absorbed by the muriate of 

 lime was the, same in both experiments, amounting to 0.45 in 

 the first ; surely much greater than should exist in 2 grains of 

 well ignited boracic acid. 



V. Organic Compounds. — Analysis of the roots of black 

 hellebore, by MM. FeneuUe and Capron MM. Pelletier and 

 Caventou some time since analyzed the roots of white hellebore, 

 and M. Vauquelin those of the helleborus hjemalis. The latter 

 chemist found that the activity of the plant resides in a principle 

 contained in the oil. The present analyzers agree with him 

 in referring the activity of black hellebore to no principle of an 

 alcaline nature. The final result of their examination gave 

 the following products : 



1. A volatile oil; 2. a fat matter; 3. a resinous matter; 4. 

 wax; 5. a volatile acid; 6. a bitter principle; 7. mucus; 8. 

 alumina; 9. gallate of potash, and acidulous gallate of lime; 

 10. a salt, with an ammoniacal basis*. 



Ivi. F. Cartier has lately analyzed the petals of the white 

 proven^al rose, from 1000 grammes of which he obtained, after 

 incineration, a residuum of 99 gr., containing subcarbonate of 

 potash, phosphate, and traces of muriate of the same base, car- 

 bonate of lime, phosphate of lime, traces of phosphate of mag- 

 nesia, some silica and oxide of iron. The quantity of the last 

 substance was determined with precision ; it was 12.5. From 

 1000 gr. of red roses, he procured only 50 of residuum, which 

 contained no more than 4 oxide of iron. He says that a phy- 

 sician of Provins had some time ago hazarded the opinion that 

 roses contained iront. 



The ichorous secretion of the tinea capitis, consists, according 

 to M. Morin's analysis, of superacetate of ammonia, osmazome, 

 gelatine, fluid albumen, concrete albumen in great abundance, 

 a fatty matter, chloride of sodium, with traces of phosphate and 

 sulphate of lime ; in all nine ingredients J:. 



M. Bouillon Lagrange has extracted from the semen contra 



* Jour.dePhar., Nov. 1821. f Ibid. J Ibki. 



I 



