PREFACE. 



The present General Subject-Index to 'The Ibis' embraces 

 the period from the commencement of tlie Journal in 1859 

 up to the end of the Sixth Series in 1894, a term of thirty- 

 six years. 



The labour of compiling this Index has devolved on 

 Mr. G. A. Doubleday, formerly Assistant Librarian, now 

 Publication Clerk, to the Zoological Society of London, 

 who has performed his task with great care and skill. 



My own share in the work has been to check the accuracy 

 of the references and to supervise the passage of the Index 

 througii the press. I trust that I have allowed no error to 

 pass undetected. 



EUGENE W. GATES. 



3 Hanover Square, Loudon, W., 

 December 1899. 



