Autograph Letter Signed, to Philip Penton, giving notice of a Unionist Demonstration, “having reference to Ulster’s appeal to England”. 1 page 7 x 4½ inches, one light stain. 21 June 1892. William Henry Dallinger (1842–1909), Wesleyan Methodist minister and biologist. Dallinger’s contributions to science were of two kinds—his classical investigations into the life history of certain micro-organisms, and his improvements in microscopical technique. In collaboration with John James Drysdale of Liverpool he concentrated his research on protozoa, in particular on flagellates, about which little was then known. He occupied the post of president of the Royal Microscopical Society four times (1884–7). He edited and rewrote William Benjamin Carpenter’s book The Microscope and its Revelations (1890; new edn, 1901), and was author of a theologico-scientific work, The Creator and what we may Know of the Method of Creation (1887). [DNB]