THE PORTRAIT OF PROFESSOR HARVEY, due to Purchasers of his "Manual of British Marine Algæ," may now be had in exchange for the "Notice" prefixed to the volume. AN INTRODUCTION TO CONCHOLOGY; or, Elements of the Natural History of Molluscous Animals. By GEORGE JOHNSTON, M.D., LL.D., Fellow of the Royal College of Surgeons of Edinburgh; Author of "A History of the British Zoophytes." 8vo. 102 Illustrations, 21_s._ AN ELEMENTARY COURSE OF GEOLOGY, MINERALOGY, AND PHYSICAL GEOGRAPHY. By DAVID T. ANSTED, M.A., F.R.S., &c., Professor of Geology at King's College, London; Lecturer on Mineralogy and Geology at the H.E.I.C. Mil. Sem. at Addiscombe; late Fellow of Jesus College, Cambridge. Post 8vo. illustrated, price 12_s._ GAME BIRDS AND WILD FOWL: their Friends and their Foes. By A. E. KNOX, M.A., F.L.S. With Illustrations by WOLF. Post 8vo. price 9_s._ MR. KNOX'S ORNITHOLOGICAL RAMBLES IN SUSSEX. Second Edition, with Four Illustrations. Post 8vo. 7_s._ 6_d._ AN ARCTIC VOYAGE TO BAFFIN'S BAY AND LANCASTER SOUND, in search of Friends with Sir John Franklin. By ROBERT A. GOODSIR, late President of the Royal Medical Society of Edinburgh. Post 8vo., with a Frontispiece and Map, price 5_s._ 6_d._ EVERY-DAY WONDERS; or, Facts in Physiology which all should know. With Woodcuts. 16mo. 2_s._ 6_d._ And, by the same Author, DOMESTIC SCENES IN GREENLAND AND ICELAND. With Woodcuts. Second Edition. 16mo. 2_s._ INSTRUMENTA ECCLESIASTICA. Edited by the Ecclesiological, late Cambridge Camden, Society. Second Series. Parts 1 to 3, each 2_s._ 6_d._ THE NATURAL HISTORY OF THE VARIETIES OF MAN. By ROBERT GORDON LATHAM, M.D., F.R.S., Fellow of King's College, Cambridge; Vice-President of the Ethnological Society of London; Corresponding Member of the Ethnological Society of New York. 8vo. illustrated, price 21_s._ A HISTORY OF BRITISH MOLLUSCA AND THEIR SHELLS. By PROFESSOR EDWARD FORBES, F.R.S., and SYLVANUS HANLEY, B.A., F.L.S. Parts 25 to 34. 8vo. 2_s._ 6_d._ plain, or royal 8vo. coloured, 5_s._ each. This Work is in continuation of the series of "British Histories," of which the Quadrupeds and Reptiles, by Professor Bell; the Birds and Fishes, by Mr. Yarrell; the Birds' Eggs, by Mr. Hewitson; the Starfishes, by Professor Forbes; the Zoophytes, by Dr. Johnston; the Trees, by Mr. Selby; and the Fossil Mammals and Birds, by Professor Owen, are already published. Each Work is sold separately, and is perfectly distinct and complete in itself. * * * * * JOHN VAN VOORST, 1, PATERNOSTER ROW. Transcriber's Amendments: p. 30, fn. 10, 'Fallermayer' amended to _Fallmerayer_. p. 31, 'Britany' amended to _Brittany_. p. 32, 'Notitiæ ...' amended to _Notitia Utriusque Imperii_. p. 34, 'Caffres' amended to _Kaffres_. p. 35, 'Woloffs' amended to _Wolofs_; 'Cabyles' amended to _Kabyles_.