344 



Professor Arthur Schuster 



[May 18, 



(E) Astronomy ; (F) Meteorology ; (G) Mineralogy ; (H) Geology ; 

 (J) Geography ; (K) Paleeontology ; (L) Biology ; (M) Botany ; (N) 

 Zoology ; (0) Anatomy ; (P) Anthropology ; (Q) Physiology ; (R) 

 Bacteriology. 



Subscribers may either obtain complete sets or any of the separate 

 volumes. The relative popularity of the different subjects is illus- 

 trated by the preceding table which gives in the different columns for 

 each science the volumes approximately required Ijy each country. 

 The figures are, of course, subject to variations from year to year. 

 The first column shows the number of complete sets subscribed for in 

 addition to the separate volumes ; these presumably find their way 

 into university or public lil)raries. 



The popularity of the special botanical catalogue is remarka])le. 



We may obtain a rough idea of the scientific activity of different 

 countries by comparing the number of slips received from them 

 during a certain interval. The numbers given in the report pub- 

 lished by the International Convention held in London last summer 

 and refeiTing to all slips received, are shown in the following table. 



The total number up to March 1906, has increased to 700,000. 



