CONTENTS. 



ROBERT BOYI.E, . 



JAMES WATT, 



SIR HUMPHREY DAVY, 



GEORGE STEPHENSON, 



SIR JAMES Y. SIMPSON, 



GALLERY OF GREAT INVENTORS 



ROGER BACON, . 



WILLIAM LEE, . 



MARQUIS OF WORCESTER, 



PRINCE RUPERT, 



SIR SAMUEL MORLAND, 



JOHN FLAMSTEAD, 



JOHN HARRISON, 



GEORGE GRAHAM, 



JAMES FERGUSON, 



MATTHEW BOULTGW, 



JOSEPH BLACK, 



JOSEPH PRIESTLEY, 



JAMES HARGREAVES, 



JOSIAH WEDGWOOD, 



HENRY CORT, . 



SAMUEL CROMPTON, 



HENRY BELL, . 



SIR DAVID BREWSTFV, 



CHARLES BABBAGE, 



HENRY BESSEMEF, 

 JOHN ERICSSON, 

 THOMAS ALVA EDISON, 



AND DISCOVERERS — 



