PEE FACE. 



The various headings under which the contents of the 

 earlier volumes of the 'Quarterly Journal of Microscopical 

 Science ' are grouped, render necessary some explanation of 

 the system on which the present Index has been arranged. 

 Its chief features, to which I have as far as possible adhered, 

 are the following : 



The names of Authors of original communications, whether 

 published only in the Journal or ' Transactions,^ or reported 

 on as translations or abstracts, are indexed in thick capitals ; 

 the successive papers of a particular author are arranged and 

 numbered in chronological sequence; and the full title, and 

 reference to the volume and page, are given in each case. 



The names of Subjects are printed in the same alphabetical 

 series with those of the authors, but in ordinary type ; refer- 

 ence is made to the author's name, and to the number assigned 

 to that one of his papers which deals with the subject. Thus, 

 on finding under " Teleostei " 



Teleostei, so-called pronephros, Balfour 

 (18). 



reference is made to Balfour's eighteenth paper, 



BALFOUR, F. M. (18). On the nature 

 of the organ in adult Teleosteans 

 and Ganoids, which is usually re- 

 garded as the head kidney or pro- 

 nephros, xxii, 12-16. 



