PEEFACE. 



The first Catalogue of the Library of the Zoological Society 

 of London, which was published in 1854, contained the titles^ 

 of about 460 works. To this a Supplement, issued in 1864, 

 added 1090 others, making a total of 1550 titles. The second 

 edition, published in 1872, contained about 2100 titles of 

 works ; the third, issued in 1880, 3200, to which a Supplement,, 

 issued in 1883, added 1000 more. 



The fourth edition of the Catalogue of the Society ^s Library,, 

 issued in 1887, contained the titles of about 6560 works. 



In the present (fifth) edition, which has been prepared, like 

 the former, by Mr. F. H. Waterhouse, the Society^s Librarian, 

 are given the titles of about 11,000 different works now in the 

 Society ^s Library, exclusive of the Periodicals, the titles of 

 which are contained in the second part of the Catalogue 

 (p. 733). 



The Library at the present time contains about 25,500 

 volumes. 



A few books, which have either been accidentally omitted or 

 added to the Library too late to be inserted in their proper 

 places, will be found catalogued in the iVppendix at the end of 

 the volume. 



P. L. SCLATER, 



Secretary. 



3 Hanover Square, W. 



