A BIOGRAPHICAL MEMOIR OF
SAMUEL HARTLIB,
MILTON'S FAMILIAR FRIEND,
With Bibliographical Notices of Works published by him; and a reprint of his Pamphlet entitled
"AN INVENTION OF ENGINES OF MOTION."
"Mr. Dircks's is the first careful attempt to make posterity his (Hartlib's) friend."—The Examiner, 18th February, 1865.
"A scholar-like little monograph, giving all the information that can be given about a man whose name occurs in the correspondence of almost every eminent literary or scientific person of the time of the Commonwealth."—The Spectator, 20th May.
One Volume, post 8vo., with engravings, price 2s,
THE GHOST!
AS PRODUCED IN THE SPECTRE DRAMA,
POPULARLY ILLUSTRATING THE MARVELLOUS OPTICAL ILLUSIONS OBTAINED BY THE APPARATUS CALLED THE DIRCKSIAN PHANTASMAGORIA.