[ Method of Dissolving Gum-Elastic ] Dr. William James Almon
Date: Published in 1791.
Manuscript Notebook of Dr. William James Almon
Institution: Nova Scotia Archives | Source Origin: Almon Family Fonds | Reference: MG 1 / Microfilm Reel 10,045
A method proposed by French geologist and travel writer Barthélemy Faujas de Saint-Fond for concocting a rubber-based mixture that might prove useful in waterproofing footwear, p. 256.
Method of dissolving gum-elastic, commonly
called Indian rubber. Translated from
Take a pound of spirits of turpentine, as much
gum elastic, cut with
very small scissors, into
very little pieces. Pour the spirit of turpentine in
a long, narrow necked receiver, which place upon
sand heated by a moderate fire; throw the gum in,
not the whole at once, but a pinch at a time. When it is
dissolved, pour in a pound of lintseed oil, mixed with
a proper quantity of litharge, to assist its drying. Let
the whole boil a short time, and the mixture is prepa-
Leather impregnated with this dissolution, is impene-
trable to water, and retains its former flexibility
Could not the mixture be used with advantage, in pre-
paring the leather for water ducts? Might not wet-wea-
ther shoes be rendered drier by the use of this mixture?