Combinations of different Metals and Chlorine . 183 
of this, in brilliant scales, were weighed in water. The solu- 
tion, precipitated by nitrat of silver, yielded 53 grains of dried 
horn silver. Hence 100 of ferranea appear to consist of 
64.9 chlorine 
35.1 iron 
100.0 
4. On the Combinations of Chlorine with Manganese , Lead, Zinc , 
Arsenic , Antimony , and Bismuth. 
I have attempted, by several methods, to obtain more than 
one combination of these different metals and chlorine, but 
without success. 
I have procured a compound of manganese and chlorine, 
by evaporating to dryness the white muriat of this metal, and 
heating to redness the residue in a glass tube, having only a 
very small orifice. Muriatic acid vapour was produced, and 
a fixed compound remained, which required a red heat for its 
fusion, and was not altered by the strongest heat that could be 
given to it in the glass tube ; but was rapidly decomposed when 
heated in an open vessel, muriatic acid fumes being evolved, 
and oxide of manganese formed, which was black or red, ac- 
cording to the intensity of the heat applied. The compound 
of manganese and chlorine is a very beautiful substance, it is 
of great brilliancy, generally of a pure delicate light pink 
colour and of a lamellar texture consisting of broad thin 
plates. 
There is not much difficulty in obtaining this compound 
pure. Iron, with which manganese is commonly contaminated, 
may be separated by two or three repetitions of the solution 
of the compound in water, the evaporation to dryness of the 
