PREFACE Vll 



and in many cases very detailed Introductions to each of the 

 other more important branches of the subject have been 

 written. 



The result is that, as compared with the first edition, as 

 compared even with the " Traite," the work is much less 

 historical, and much more critical. Much more choice has 

 been exercised has had to be exercised. The first edition 

 could claim to have brought together a " practically exhaus- 

 tive " collection of the formulae relating to the methods of 

 microscopic anatomy. To make such a collection now would 

 be well-nigh impossible and well-nigh useless. It would form 

 not a book but a library, in which the really useful matter 

 would remain smothered in a sea of details of doubtful utility. 



YILLEFRANCHE-SUR-MER ; 

 February, 1890. 



