A triplet of inventions, consisting of a description of a nocturnal or diurnal telegraph; a proposal for an universal character; and a scheme for facilitating the progress of science, ... By Thomas Northmore, ...
Northmore, Thomas,1766-1851.
Exeter : printed and sold by R. Trewman and Son; and J. Owen, London,
[1796]
Dedication dated: Cleve, Jan. 25, 1796.
ESTC