_Late Secretary to the Inst. of Engineers and Shipbuilders in Scotland_. “Concisely and CLEARLY WRITTEN ... cannot but prove an acquisition to those studying Navigation.”--_Marine Engineer_. “Young Seamen will find it HANDY and USEFUL, SIMPLE and CLEAR.” --_The Engineer_. * * * * * _FIRST AID AT SEA_. Third Edition, Revised. With Coloured Plates and Numerous Illustrations, and comprising the latest Regulations Respecting the Carriage of Medical Stores on Board Ship. Price 6s. A MEDICAL AND SURGICAL HELP FOR SHIPMASTERS AND OFFICERS _IN THE MERCHANT NAVY._ By WM. JOHNSON SMITH, F.R.C.S., Principal Medical Officer, Seamen’s Hospital, Greenwich. =⁂= The attention of all interested in our Merchant Navy is requested to this exceedingly useful and valuable work. It is needless to say that it is the outcome of many year PRACTICAL EXPERIENCE amongst Seamen. “Sound, JUDICIOUS, REALLY HELPFUL.”--_The Lancet_. =⁂= For Complete List of GRIFFIN’S NAUTICAL SERIES, see p. 39. * * * * * LONDON: CHARLES GRIFFIN & CO., LIMITED, EXETER STREET, STRAND. * * * * * _GRIFFIN’S NAUTICAL SERIES._ Ninth Edition. _Revised, with Chapters on Trim, Buoyancy, and Calculations. Numerous Illustrations. Handsome Cloth, Crown 8vo. Price 7s. 6d._ KNOW YOUR OWN SHIP. By THOMAS WALTON, Naval Architect. _Specially arranged to suit the requirements of Ships’ Officers, Shipowners, Superintendents, Draughtsmen, Engineers, and Others,_ This work explains, in a simple manner, such important subjects as: --Displacement.--Deadweight.--Tonnage.--Freeboard.--Moments. --Buoyancy.--Strain--Structure.--Stability.--Rolling.--Ballasting. --Loading.--Shifting Cargoes.--Admission of Water.--Sail Area.--&c. “The little book will be found EXCEEDINGLY HANDY by most officers and officials connected with shipping.... Mr. Walton’s work will obtain LASTING SUCCESS, because of its unique fitness for those for whom it has been written.”--_Shipping World._ _BY THE SAME AUTHOR._ Steel Ships: Their Construction and Maintenance. (See page 38.) * * * * * Fifteenth Edition, _Thoroughly Revised, Greatly Enlarged, and Reset Throughout. Large 8vo, Cloth, pp. i-xxiv + 708. With 280 Illustrations, reduced from Working Drawings, and 8 Plates. 21s. net._ A MANUAL OF MARINE ENGINEERING: