INTERNATIONAL CATALOGUE OF 
SCIENTIFIC LITERATURE. 
Tue Rovan Society has been engaged for some years past 
in arranging for the publication of'an International Catalogue 
of Scientific Literature, beginning from the Ist January, 
1901. Each science will be represented in an annual volume 
containing lists arranged under authors and subjects, of all 
books and papers published during the year; these will be 
contributed through official channels of information—abroad, 
by direct controlof the respective governments—at home, 
by meaus of the various Societies which devote themselves 
to particular sciences; those Societies whose domains over- 
lap having arranged for mutual cooperation. 
The collection of title-slips for the United Kingdom of 
Great Britain and Ireland as regards 
BOTANY 
has been undertaken by the Council of the Linnean Society, 
and they appeal to all botanic workers for support in their 
endeavour to compile a complete record, by sending notices 
promptly of all botanic issues to the undersigned. 
The fourth volume, for 1904, is in preparation. 
B. DAYDON JACKSON, 
General Secretary, Linn. Soc. 
