Gums are soluble in water; resins in alcohol and essential oils.
The turpentine is to be added after the resins are dissolved.
These last two characteristics distinguish it from other resins.
There are also resins, a volatile oil and several other constituents.
A yellow or reddish-yellow substance, forming one of the three resins found by Schlsberger and Dpping in rhubarb.
The same thing takes place in the solution of resins in alkohol.
It appears to be uncrystallizable, and possesses the general properties of resins.
But as I have said, chemists in those days were shy of resins.
I don't think your gums and resins would do the deed so well.
If the resins are not thoroughly dissolved away the paper turns brown in the course of time.