CHAIRMAN OF THE COMMITTEE ON EDUCATION IN THE LEGISLATURE OF NEW THE REV. A. B. DOD, PROFESSOR OF MATHEMATICS IN THE COLLEGE OF NEW JERSEY. AUTHOR OF " TWO YEARS AND A HALF IN THE NAVY," AND LATE PRINCIPAL OF THE EDGEHILL SCHOOL. PHILADELPHIA: HOGAN AND THOMPSON, 30 NORTH FOURTH STREET. Entered, according to the act of Congress, by E. C. WINES, in the Clerk's Office of the District Court of the Eastern District of Pennsylvania. C. SHERMAN AND CO., PRINTERS, 19 St. James Street. 7-15-1924 0 PREFACE. WHOEVER writes a book, must write a preface. This is one of the laws of THE TRADE: whether it is more honoured in the breach, or in the observance, it is not for us to decide. It is at least a time-honoured custom, from which we shall not, on the present occasion, hazard a departure. The Preface is generally an Author's Confes-f sional; wherein he duly bepraises his own modesty, sets forth the hurry and various embarrassments under which his work was written, and then humbly craves absolution from the officiating |