[Footnote 1: Lowndes has attributed this work, but we think incorrectly, to
the celebrated John Dunton.--ED.]
_Gutta Percha made soluble._--Can any one inform me how gutta percha may be
made so soluble, that a coating of it may be given any article, which shall
dry as hard as its former state? I have tried melting it in a ladle, but it
never hardened properly.