PREFACE 



THE present edition of ' Quain's Anatomy ' will appear in four volumes, of which 

 this one, containing the Embryology, is the first. The remaining volumes will 

 comprise respectively General and Visceral Anatomy ; the Nervous System and 

 Sense Organs ; and the Bones, Ligaments, Muscles, and Blood- vessels. Each volume 

 will be complete in itself and will serve as a text-book for the particular subject 

 or subjects with which it deals. Thus the first volume is intended to form a com- 

 plete text-book of Human Embryology, the second a text-book of Histology and 

 Visceral Anatomy, the third a text- book of Neurology, while the fourth will deal 

 with the systems which are not included in the second and third volumes. 



The work has been completely re- edited and brought up to date. The 

 volume on Embryology, which was written for the previous edition by Professor 

 Schafer, has in the present edition been entrusted to Dr. Bryce, who has 

 re-' written it and has added a large number of illustrations. The advances in our 

 knowledge of human embryology have necessitated considerable additions to the 

 text, and this, combined with the profuseness of illustration, has resulted in some 

 increase in bulk of the volume ; but, in spite of the wealth of detail with which 

 the subject is treated, this is by no means excessive. There has been some saving 

 of space by the omission of the bibliographical list which in the former edition 

 followed each subject. These lists, although at the time useful, are no longer 

 necessary, since they are to be found in a very complete form in the compendious 

 ' Handbuch der Entwickelungslehre,' by numerous authors, which has lately 

 been published under the editorship of Professor 0. Hertwig, as well as in 

 the earlier ' Bibliography of Vertebrate Embryology,' by Professor Minot. 



In the matter of illustrations the volume* is indebted to the skill of Mr. A. Kirk- 

 patrick MaxweU for the original drawings of figs. 116, 118, 119, 121, 122, 129, 

 130, and 136, as well as for some adaptations of figures from other authors. For 

 the photographic illustrations of his preparations which are reproduced in 

 figs. 74, 156, 157, 162, 163, 164, 176, 220, and 246, Dr. Bryce desires to signify his 

 obligation to Dr. J. H. Teacher. All other original drawings and diagrams, both in 

 black-and-white and in colour, and most of the adaptations, are from his own pencil. 

 In addition to the original illustrations, Mr. Gustav Fischer of Jena has supplied 

 cliches of a number of valuable figures, many of them from the well-known 

 text-book of Professor Kollmann. Dr. Bryce further begs to acknowledge the 

 obligation he is under to Professor J. Graham Kerr for reading the proof-sheets of 

 Section I. The Index to this volume has been prepared by Miss Agnes Picken, 

 M.A., M.B.Ch.B., Demonstrator of Anatomy in the Department for Women, 

 University of Glasgow. 



