PREFACE 



THE reader who compares the present work with the first 

 edition will find that it has been not only enlarged, but so 

 fundamentally revised and to so great an extent re-written 

 that it would possibly have been more correct to consider it 

 as a new book, and to give it a new title. It is not based on 

 the original English edition of 1885, but on the French edition 

 of 1887, which I prepared with the valuable aid of Dr. L. F. 

 HENNEGUY, and which was considered when completed to have 

 so far outgrown its English parent that we decided on giving it 

 a dissimilar and independent title (" Traite des Methodes Tech- 

 niques de TAnatomie Microscopique, Histologie, Embry- 

 ologie, et Zoologie," par MM. Arthur Bolles Lee et F. 

 Henneguy, Preparateur du cours d'embryogenie au College de 

 France. Avec une Preface de M. Ranvier, Professeur au 

 College de France. Paris, 0. Doin. 1887). 



As stated in the Avant-propos of that work, the " Traite " 

 is not a mere translation of the " Vade-Mecum ;" it differs 

 from it by the compression or omission of many passages 

 dealing with matter of secondary importance; by the suppres- 

 sion of the chapter relating to the demonstration of patholo- 

 gical " Micro-organisms " a subject which can now no 

 longer be dealt with satisfactorily within the limits of a 

 chapter ; and by the far greater development given to certain 

 important subjects, such as the methods of Embryology, of* 

 Cytology, of Neurology. I am greatly indebted to my able 

 friend Dr. HENNEGUY for the important aid rendered by him in 

 the preparation of our joint work. His share in it consisted 



