Soften good glue in water, then boil it with strong vinegar and
thicken the liquid, during boiling, with fine wheat flour, so that a
paste results; or starch paste with which a little Venice turpentine
has been incorporated while it was warm.
A recipe for a transparent cement which possesses great tenacity and
has not the slightest yellow tinge: Mix in a well-stoppered bottle ten
drachms of chloroform with ten and one-half of non-vulcanized
caoutchouc (rubber) cut in small pieces. Solution is readily effected
and when it is completed add two and one-half drachms of mastic. Let
the whole macerate from eight to ten days without the application of
any heat and shake the contents of the bottle at intervals. A
perfectly white and very adhesive cement is the result.