.84 An Account of some E.vperiments on the 



of a metallic splemloiir, and of a lamellar texture. As it 

 absorbs chlorine when heated in tins u;i8, and becomes en- 

 tirely converted into the volatile compound, and as the vo- 

 latile compound n>ay likewise be obtained by healing, in a 

 glass tube nearly closed, the residue from the evaporation 

 ot the red muriat,itis evident ih.il the fixed compound con- 

 tains less chlorine than the volatile, and thai the former, 

 consequenllv, may be called ferrane, and the latter ferranea. 



Ft rrane dissolves in water, and forms the green muriat 

 of iron ; but the solution of the whole substance is not 

 complete. There is always left a small and variable quan- 

 tity of black oxide, which mav be considered, on account 

 of its variability, in a state of mechanical mixture, rather 

 than of chemical union with the ferrane. 



Ferranea is entireK' soluble in water. The solution is 

 identical with the red muriat of iron. 



The analysis of both these compounds is easily eflected 

 by rneans of nitral of silver. 



Fiftv grains of ferrane were put into water : the insohw 

 hlc residue separated from the solution by decantationj 

 washed, dried, and heated to redness for a minute, pre- 

 viously moistened with oil, weighed 3 grains, and was in 

 the state of the black oxide, being attracted by the magnet. 

 The solution entire, precipitated by nitral of silver, afforded 

 102-5 grains of dried horn silver, which indicating 25*1125 

 grains of chlorine, the proportion of iron, omitting the. 

 3 grains of oxide, appears to be 2r887j. And hence lOO 

 of ferrane seem to consist of 



53-43 chlorine 

 46-57 iron 

 "lOO^O 



Ferranea is not easily obtained in considerable quatvtities, 

 I have been obliged in consequence to opeiate upon small 

 portion.'i. The subject of analysis was procured bv sub- 

 limation from the residue by evaporation of the red muriat. 

 20 grains of thi'-, in brilliant scales, were weighed in water. 

 The solution, precipiiated by nitral of silver, yielded 53 

 grains of dried born silver. Hence 100 of ferranea appear 

 to consist of 



64 9 chlorine 

 35 1 iron 

 1000 



4. On the Comhhiations of Chlorine with Mnvgavese, Lead, 

 Zinc, ylrse7tic, Aniiwony, and Bismulh. 



I have attempted, by several meihods, to obtain more 



than 



