4 OHARLE8 ORIFFIN A CO.'S PUBLICATIONS. 



GRIFFIN'S NAUTICAL SERIES. 



Crown 8vo, with Numerous Illustrations. Handsome Cloth. 3s. 6d. 



Practical Mechanics: 



Applied to the Requirements of tlie Sailor. 

 BY THOS. MACKENZIE, 



Master Mariner, F.R.A.S. 



GENERAL CONTENTS. Resolution and Composition of Forces Work done 

 ty Machines and Living Agents The Mechanical Powers : The Lever ; 

 Derricks as Bent Levers The Wheel and Axle : Windlass ; Ship's Capstan ; 

 Crab Winch Tackles : the "Old Man" The Inclined Plane; the Screw 

 The Centre of Gravity of a Ship and Cargo Relative Strength of Rope : 

 Steel Wire, Manilla, Hemp, Coir Derricks and Shears Calculation of the 

 Cross-breaking Strain of Fir Spar Centre of Effort of Sails Hydrostatics : 

 the Diving-bell ; Stability of Floating Bodies ; the Ship's Pump, &c. 



" THIS EXCELLENT BOOK . . . contains a LARGE AMOUNT of information." 

 Nature. 



" WELL WORTH the money . . . will be found EXCEEDINGLY HELPFUL." 

 Shipping World. 



11 No SHIPS' OFFICERS' BOOKCASE will henceforth be complete without 

 CAPTAIN ^MACKENZIE'S ' PRACTICAL MECHANICS. ' Notwithstanding my many 

 years' experience at sea, it has told me how much more there is to acquire." 

 (Letter to the Publishers from a Master Mariner). 



" I must express my thanks to you for the labour and care you have taken 

 in 'PRACTICAL MECHANICS.' . . . IT is A LIFE'S EXPERIENCE. . . . 

 What an amoimt we frequently see wasted by rigging purchases without reason 

 and accidents to spars, &c., &c. ! 'PRACTICAL MECHANICS' WOULD SAVK ALL 

 THIS." (Letter to the Author from another Master Mariner). 



Crown 8vo, with Diagrams. 2s. Post-free. 



Latitude and Longitude: 



Hovsr to FixidL tliem. 



BY W. J. MILLAR, C.E., 



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. 



%* For Complete List of GRIFFIN'S NAUTICAL SERIES, see p. 45. 



LONDON: CHARLES GRIFFIN & CO., LIMITED, EXETER STREET, STRAND. 



