Autograph Letter Signed, to “My dear Ward”, describing his travels to Bristol and to Limerick where, over a fortnight, “I collected some hundreds of specimens of Algae …” 3 pp. 7 x 4 inches, in fine condition. Trinity College Dublin, 30 October 1847. “The only novelty to me was Bytophloea companata, of which I enclose specimens. It is a very rare plant, but I found an abundant habitat, where it is likely to be found again. A large pool nearly full of it. I enclose you specimens, and hope you will admire them. Not every rare plant is so pretty.” William Henry Harvey (1811-1866), professor of botany and curator of the herbarium at Trinity College, Dublin, author of many works including Phycologia Britannica: or, A History of British Sea-Weeds, and Nereis Boreali-Americana, or contributions towards a history of the marine algae of the Atlantic and Pacific coasts of North America. Darwin rated Harvey “a first-rate botanist”.