INTERNATIONAL CATALOGUE OF 
SCIENTIFIC LITERATURE. 
Tue Rovar Socrery has been engaged for some years past in arranging for 
the publication of an International Catalogue of Scientific Literature, 
beginning from the lst January, 1901. Each science is represented in 
an annual volume containing lists arranged under authors and subjects, of 
all books and papers published during the year; these are contributed 
through official channels of information—abroad, by direct control of the 
respective governments—at home, by means of the various Societies which 
devote themselves to particular sciences; those Societics whose domains 
overlap 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 eleventh volume is in the press, and the twelfth is in preparation. 
B. DAYDON JACKSON, 
General Secretary, Linn. Soe. 
