PREFACE TO THE FOURTH EDITION. 



The Third Edition of Strangeways' being exhausted, it is 

 deemed advisable to issue a Fourth. 



The work has been very car%'ully read and considered, with 

 the result that little or no material alteration has been made. 

 The diction has occasionally been improved, and a few alterations 

 and additions made in the nomenclature where such appeared 

 necessary. 



Histology has become such a distinct branch of science, that 

 the portions touching on that subject must, in a work like this, 

 be somewhat brief and insufficient ; but they have been modified 

 and allowed to remain, as they may not prove altogether useless. 



I trust that this Edition of the work will maintain the 

 reputation acquired by its immediate predecessors.^ 



I. VAUGHAN. 



Edinburgh, 29th April, 1892. 



