+Geology+. Field Geology, with a Section on Palæontology. By W. HY. PENNING, F.G.S., of H.M. Geological Survey, and A. J. JUKES-BROWNE, B.A., F.G.S., of H.M. Geological Survey. Illustrated with woodcuts and coloured map. Second edition, revised and enlarged, price 7s. 6d. “Satisfies a want which has long been felt and frequently expressed.”—_Nature._ “Others have taught us the principles of the science, but Mr. Penning, as an accomplished field-geologist, introduces us to the practice.”—_The Academy._ +Geology+. Engineering Geology. By the same Author. Illustrated with coloured map and woodcuts, price 3s. 6d. “A full and lucid description of surveying and mapping, the diagnosing of the various minerals met with, the value of sites and rocks for engineering operations, etc.”—_Popular Science Review._ +Gout.+ On the Tonic Treatment of Gout. With Cases. By JAMES C. DICKINSON, M.R.C.S., late of H.M.’s Bengal Army. Second edition, price 3s. 6d. “A thorough and practical work.”—_Public Opinion._ +Gout.+ Suppressed Gout: its Dangers and Treatment; with an Appendix on the Uses of the Vals Waters. By the same Author. Price 2s. +Hair.+ The Hair: its Growth, Care, Diseases, and Treatment; with Historical Chapters on Fashions in Hair and Beards from the Assyrian to Modern Times. By C. H. LEONARD, M.A., M.D. With 116 engravings, price 7s. 6d. “Is entertaining reading, will afford many useful hints to the practitioner, and be much appreciated by the public, especially the fashionable portion of it.”—_Lancet._ +Hay Fever+: Its Causes, Treatment, and Effective Prevention; Experimental Researches. By CHAS. HARRISON BLACKLEY, M.D. Second edition, revised and enlarged, price 10s. 6d. “A piece of real honest work, original and instructive, and will well repay perusal.”—_Lancet._ “The treatise before us is one of the fullest that we are acquainted with on this subject; we recommend it cordially to all who may wish for a practical work on this once mysterious disease.”—_Medical Times._ +Heart.+ On Insufficiency of Aortic Valves in Connection with Sudden Death: with Notes, Historical and Critical. By JOHN COCKLE, A.M., M.D., F.R.C.P., Physician to the Royal Free Hospital, late President of the Medical Society of London. Second edition, price 2s. 6d. +Heart.+ Contributions to Cardiac Pathology. By the same Author. Price 2s. 6d. +Heart.+ An Essay on Fatty Heart. By HENRY KENNEDY, A.B., M.B. Dub. Univ., Physician to the Whitworth Hospitals. Price 3s. 6d. “We have no hesitation in recommending it as a most valuable contribution to the literature of the all-important subject of which it treats.”—_Medical Press and Circular._ +Histology.+ Introduction to Practical Histology. By GEORGE THIN, M.D. Price 5s.