INSTRUCTIONS. 



The present volume coutains three parts, (a) Schedules and Indexes 

 in four languages ; (b) An Author Catalogue ; (c) A Subject Catalogue. 



The Subject Catalogue begins with some general sections 0000 to 0200. 

 It is then divided into Palaeozoology and Falaeobotany. Each of these 

 main divisions is sub-divided into three sections. The first section 

 gives the books or papers arranged according to strata ; in the second 

 section the arrangement is according to fossils ; while the third section 

 gives a list of new genera and species. 



At the end of the Subject Catalogue there is a list of new specific 

 and generic names. 



To find the papers dealing with a particular subject the reader 

 may consult either the Schedule or the Index to the Schedule. 

 The numbers given in the index are Registration numbers, and can be 

 used at once for turning to the proper page of the Subject Index. This 

 is done by looking at the numbers at the right-hand top corners of 

 the pages. 



In each section the final ■ arrangement of papers is in the 

 alphabetical order of authors' names. 



If the reader remember the name of the author of a paper on a 

 given subject, he will probably find it convenient to refer to the 

 Author Catalogue rather than to the Subject Catalogue. 



In the Author Catalogue the numbers placed within square brackets 

 at the end of each entry are Registration numbers, and serve to 

 indicate the scope of each paper indexed. The meaning of these 

 numbers will at once be found by reference to the Schedule. 



In case the abbreviated titles of Journals are not understood, a key 

 to these is provided at the end of the volume. 



The literature indexed is mainly that of 1905, but includes 

 those portions of the literature of 1901-1904 in regard to which the 

 index slips were received by the Central Bureau too late for inclusion in 

 the previous volumes. 



Topographical Symbols. 



Many of the sections are divided into a number of sub-sections 

 by means of topographical symbols. These symbols are letters printed 

 in italics. They are explained in the Topographical Classification 

 appended to the volume. • The topograi^hical symbols are not used 

 instead of registration numbers. 



CONTENTS 



