I DEDICATE THIS BOOK AS A MARK OF ADMIRATION AND ESTEEM TO THE DISTINGUISHED ENGINEER SIR WILLIAM EDMUND GARSTIN, G.C.M.G.

ETC., ETC., ETC.

WHO HAS MEASURED AND CURBED THE RIVER OF EGYPT AND SET, BOUNDS TO THE FLOOD THEREOF AND TURNED THE WILDERNESS INTO A POOL OF WATER AND THE PARCHED PLACES INTO WATER-SPRINGS AND MADE THE DESERT TO BLOSSOM AS THE ROSE