INSTRUCTIONS. 



The present volume consists of three parts : — 



(a) Schedules and Indexes in four languaj^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. These numbers follow one another in numerical 

 order. 



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. 



In each section the final arrangement of entries 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 

 tnimbers 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 1904 and the earlier part of 

 1905, but includes those portions of the Uterature of 1901, 1902 and 

 1903 in regard to which the index slips were received by the 

 Central JJureau too late for inclusion in the previous volumes. 



CONTENTS. 



Author Catalogue . . 



Subject Catalogue . . 

 Methods 

 Observatories and Instruments 

 Physics of Atmosphere 

 Temperature and Radiation 

 Aqueous Vapour and Rain 



Wind 



Atmospheric Electricity 

 Climatology 

 Terrestrial Magnetism 



PAGE 



49 

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 142 

 156 

 161 

 168 

 200 



