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THE STEAM EXAMINATION FORMASTERS AND MATES, AS REQUIRED BY THE LOCAL MARINE BOARD, (With Illustrated Diagrams), SHEWING ALL THE INTERNAL AND EXTERNAL ARRANGEMENT OF BOILERS, ENGINES, COMMON AND COMPOUND, ADAPTED TO THE WANTS OF THOSE WHO KNOW NOTHING ABOUT THE ENGINE. BY M. ION, Preparer for the Liverpool Examination. LIVERPOOL:PHILIP, SON AND NEPHEW, ATLAS BUILDINGS, 49 AND 61, SOUTH CASTLE STREET. 1871