INSTRUCTIONS 



The present volume consists of three parts : — 



(a) Schedules and Indexes in four lan^ua^es. 



(b) An Author Catalogue. 



(c) A Subject Catalogue. 



The Subject Catalogue is divided into sections, each of which is 

 denoted by a four-figure number between 0000 and 9999 called 

 a Registration number. 



In each section the final arrangement of papers is in the 

 alphabetical order of authors' names. 



In order to find the papers dealing with a particular subject the 

 reader may either consult 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 outer top corners of the 

 pages. 



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. 



