On frontispiece: "THE CHEMISTGRY OF // DENTAL MATERIALS // BY C. S. GIBSON // O.B.E., M.A. AND B.Sc. (Oxon.), M.Sc. Tech. (Manc.), F.I.C. // PROFESSOR OF CHEMISTRY AT GUY'S HOSPITAL // MEDICAL SCHOOL IN THE UNIVERSITY OF LONDON // PHILADELPHIA: P. BLAKISTON'S SON & CO // 1012 WALNUT STREET // 1923"