The present work, begun during the author's tenure of a I gladly take this opportunity of expressing my gratitude to Professor L. E. Kastner, at whose suggestion this investigation was undertaken, for his generous assistance, and the unfailing interest he has shown in my work during the whole course of its preparation. I am likewise considerably indebted to Dr. Phoebe Sheavyn for helpful criticism and advice, to Professor Tout for kindly reading through the introductory chapter, and to Mr. J. Marks for a careful revision of the proofs and many useful indications. I owe a great deal to my father also, whose sympathetic advice and encouragement did much to lighten my task. Nor can I close this list of acknowledgments without recording my obligation to the Secretary of the Press, Mr. H. M. McKechnie, for the valuable assistance he has so freely given me during the progress of this volume through the Press. KATHLEEN LAMBLEY. Durham, January 1920. |