PREFACE 



As was stated in the first edition of this Catalogue, issued in 1885, it is 

 intended to contain the principal independent periodicals of every branch 

 of pure and applied science, published in all countries from the rise of 

 this literature to the present time. The compiler has endeavored to give 

 full titles, names of editors, sequence of series and other bibliographical 

 details, and to arrange the whole on a simple plan convenient for refer- 

 ence. The range of topics is shown in the Index of Subjects ; while 

 medicine has been excluded, anatomy, physiology, and veterinary sci- 

 ence, being related to zoology, have been admitted. "With a few ex- 

 ceptions serials constituting transactions of learned Societies have been 

 omitted; those admitted either form part of a series begun or ending in 

 an independent periodical, or are presumably not exclusively devoted 

 to the proceedings of the Societies by which they are edited. 



Some of the journals included in this Catalogue are of doubtful 

 scientific value, and the right of some to be classed as periodicals is 

 questionable ; in these and other debatable cases many titles have been 

 admitted on the ground that " in a bibliography it is much better that 

 a book should be found which is not sought, than that one should be 

 sought for and not found." (Zuchold.) 



The plan of the Catalogue is as follows : The titles are arranged 

 alphabetically by the first word, the articles and the adjective " New " 

 (with its equivalents in different languages) alone excepted. The various 

 titles borne by a periodical at different times are arranged in chronologi- 

 cal order under the first or earliest title of the series. Cross-references 

 have been freely introduced, and are of four kinds : 1st, from the later 

 to the first title of a periodical which has suffered changes in title ; 2c?, 

 from short titles in common use to the correct designations ; 3^, from 

 the names of the principal editors to the journals conducted by them ; 

 ■^th, in the case of astronomical publications, from the places in which 

 the Observatories are situated to the titles of the periodicals issued 

 therefrom. 



Part I of the alphabetical catalogue is a reprint from the plates of 

 the first edition, after having made the changes necessary to bring the 

 titles down to date. Part II contains additions to the titles of Part I 

 that could not be inserted in the plates, together with about 3600 new 

 titles. The letter s following a title, in Part I, refers to additional in- 

 formation in Part II. Numbers enclosed in brackets, in Part II, denote 

 that earlier data will be found in Part I. 



