“MR. WALTON’S book will be found VERY USEFUL.”--_The Engineer_. * * * * * Navigation: Theoretical and Practical. By D. Wilson-Barker and William Allingham. Second Edition, Revised. 3s. 6d. “Precisely the kind of work required for the New Certificates of competency. Candidates will find it INVALUABLE.”--_Dundee Advertiser_. * * * * * Marine Meteorology: For Officers of the Merchant Navy. By WILLIAM ALLINGHAM, First Class Honours, Navigation, Science and Art Department. With Illustrations, Maps, and Diagrams, and _facsimile_ reproduction of log page. 7s. 6d. “Quite the BEST PUBLICATION on this subject.”--_Shipping Gazette_. * * * * * Latitude and Longitude: How to Find Them. By W. J. Millar, C.E. Second Edition, Revised. 2s. “Cannot but prove an acquisition to those studying Navigation.” --_Marine Engineer_. * * * * * Practical Mechanics: Applied to the requirements of the Sailor. By Thos. Mackenzie, Master Mariner, F.R.A.S. Second Edition, Revised. 3s. 6d. “Well Worth the money ... EXCEEDINGLY HELPFUL.”--_Shipping World_. * * * * * Trigonometry: For the Young Sailor, &c. By Rich. C. Buck, of the Thames Nautical Training College, H.M.S. “Worcester.” Third Edition, Revised. Price 3s. 6d. “This EMINENTLY PRACTICAL and reliable volume.”--_Schoolmaster_. * * * * * Practical Algebra. By Rich. C. Buck. Companion Volume to the above, for Sailors and others. SECOND EDITION, Revised. Price 3s. 6d. “It is JUST THE BOOK for the young sailor mindful of progress.”--_Nautical Magazine_. * * * * * The Legal Duties of Shipmasters. By Benedict Wm. Ginsburg, M.A., LL.D., of the Inner Temple and Northern Circuit: Barrister-at-Law. Second Edition, Thoroughly Revised and Enlarged. Price 4s. 6d. “Invaluable to masters.... We can fully recommend it.” --_Shipping Gazette_. * * * * * A Medical and Surgical Help For Shipmasters. Including First Aid at Sea. By WM. JOHNSON SMITH, F.R.C.S., Principal Medical Officer, Seamen’s Hospital, Greenwich. THIRD EDITION, Thoroughly Revised. 6s. “SOUND, JUDICIOUS, REALLY HELPFUL.”--_The Lancet_. * * * * * LONDON: CHARLES GRIFFIN & CO., LIMITED, EXETER STREET, STRAND. * * * * * GRIFFIN’S NAUTICAL SERIES. _Introductory Volume_. _Price_ 3_s_. 6_d_.