Illustrations for 'Outlines of magnetism and electricity', drawn by G.T.Riley Figures intended to illustrate the book 'Outlines of magnetism and electricity, for public schools and science and art examinations; being notes of a course of lectures delivered at the Royal School of Naval Architecture, with an introduction on the first principles of physics', by William Fletcher Barrett (London, Bell & Daldy, 1871). Original illustrations (one signed 'G.T.Riley') with printed versions. Including a printed advertisement for the book (used as a wrapper) based upon its title-page, inscribed: 'Will you kindly make this known where it may be useful W.F.B.'. 1871