the Swedish Stone Paper. 135 
in breadth costs at Carlscrona only two scliellings 
Swedish. 
An invention of such utility and importance ought 
therefore to excite the ingenious to attempt an imitation 
of it, in order that, if possible, it may be rendered more 
public. As soon as I obtained a specimen of it from 
Sweden, I made experiments to try whether I could not 
discover the method of making it. The fragment which 
I first examined was a line in thickness. It was light, 
easily broken, and possessed all the properties above 
enumerated. As the analysis by which M. Antie de 
Servin, at the request of M. Crell, endeavoured to illus- 
trate the nature of this paper, did not appear to me satis- 
factory, I subjected part of the specimen sent me to a far- 
ther examination, leaving a third portion entire for the 
sake of comparison. 
After this examination the red stone-paper appeared 
to me to consist of, 1. Martial bole, which seemed to be 
equal to half its weight, and which, on account of the 
chalk perhaps, or calcareous earth with which it was 
mixed, produced a little effervescence with acids. Per- 
haps also there were some particles of another earth, the 
discovery of which would be of little importance to the 
object of this research. 2. A vegetable matter of little 
weight, and similar to that used in the making of common 
paper. This formed about a fourth part of the weight. 
8. An animal glue, similar to that which is procured by 
boiling from various animal substances : and, 4. A cer- 
tain oil which seemed to have a resemblance to linseed 
oil. These substances (3 and 4) made about a fourth 
part of the weight. 
Another specimen which I received from Mr. Came- 
ron, architect to her imperial majesty, contained the same 
substances in proportions a little different. I was, how. 
ever, not able to obtain specimens of the white and yek 
