This book develops the theme of Dr. Karl Young's article of 1904. I have used his materials, including a number of parallel passages, with no more than a general acknowledgment, which I here anticipate.
I owe a great debt to Professor A. Ewert, once my supervisor at Oxford, for valuable advice given generously both in and after the term of his office.
It was Professor Walter Murdoch of Perth who found time, during a holiday which might have been more pleasantly spent, to go through an early manuscript of mine and suggest that I might make a book of it; and at a later stage I had help of a similar kind from Mr. S. J. E. Southgate of the British Museum. To both I am indebted for their interest as well as their suggestions.
I wish to thank Professor L. F. Benedetto of Florence for his kindness in procuring for me photographs of a farce which was not then available in print.
My present colleagues at Sydney -- Professor G. G. Nicholson and Dr. Ian Henning of the French Department, Professor E. R. Holme, Mr. R. G. Howarth, Dr. A. G. Mitchell, and Mr. H. J. Oliver of the English Department--have always been ready to place their time and knowledge at my disposal. I am particularly grateful to Professor Nicholson for helping me to unravel a knotty passage in one of the farces.
It remains to thank Professor N. Bögholm of Copenhagen for his assistance in one of my historical enquiries, and his colleague, Professor C. A. Bodelsen, for suggestions in matters of style which I have been very glad to adopt. It is a pleasure to recall, among their many kindnesses, these, for which I may put my thanks on record.