The materials out of which the Catalog-ue is formed are to be 

 fiirnislied by Regional Bureaus. 



JReg-ional Bureaus have already been established in Austria, Belgium, 

 Canada, Cape Colony, Denmark, Egypt, France. Great Britain and Ireland, 

 Germany, Greece, Holland, Hungary, Ital}^, India and Ceylon, Japan, 

 Mexico, New Zealand, New South Wales, Norway, Portugal, Poland, 

 Queensland, Russia, South Australia, Sweden, Switzerland, the United 

 States of America, Victoria, Western Australia, Finland. 



The branches of Science to be included in the Catalogue are the 

 seventeen following : — 



A — Mathematics 



B — Mechanics 



C — Physics 



D — Chemistry 



E — Astronomy 



F — Meteorology (including Terrestrial Magnetism) 



G — Mineralogy (including Petrology and Crystallography) 



H — Geology 



J — Geogiaphy (Matiiematical and Phj^sical) 



K — Palyeontology 



L — General Biology 



M — Botany 



N — Zoology 



— Human Anatomv 



P — Physical Anthropology 



Q, — Physiology (including experimental Psychology, Pharmacolog'y 



and experimental Pathology) 

 R — Bacteriology 



Each complete annual issue of the Catalogue thus consists of 

 seventeen volumes. The price at which this set is sold to the 

 public is £18. Individual volumes are sold at prices varying with 

 their size from about ten to thirty-nine shillings. 



A Schedule of Classification and an Index thereto are pre- 

 fixed to each volume in English, French, German, and Italian. 

 This will not onl}" enable the scientific worker to study the system 

 of classification in the language wnth which he is most familiar, but 

 also in cases of doubt — e.g. as to the meaning of a word — will enable 

 him to refer to the cr)rresponding entry in another lang'uage. Should 

 there be a marked discrepancy among the schedules on an}^ point the 

 English schedule is to be taken as guide, the schedules printed in that 

 language being* those which were approved by the International 

 Council. 



The various headings and sub-headings throughout the Subject Index 

 are given in English. Ti'anslations of the main headings can be found 

 on reference to the schedules in the other languages by means of 

 the registration numbers that are attached to them. 



Tlie entries in the Subject Indexes are in the language of the 

 original paper when that is one of the following five languages : 

 Latin, English, French, German, and Italian. These are the onlv 

 languages used in the Subject Index, but in case of translation the 

 name of the language of the original is inserted within round brackets, 



