IV 
PREFACE. 
of 201 journals and occupied less than six pages. The number 
« 
of periodicals in the list of this year’s Volume is upwards of 
1000, and the list extends to about 52 pages. This gives some 
idea of the extent to which the work to be done has increased 
in 30 years. The number of new generic names registered in 
1870 was a little more than 700. Last year it was 2102. 
Critics will certainly find it easy to discover deficiencies in 
the Volume, but we may doubt whether they will realise the 
extent of the work involved in it. 
In another year or so we shall be able to judge whether the 
Zoological Volume of the International Catalogue of Scientific 
Literature will sufficiently meet the requirements of Zoologists, 
and will justify the Zoological Society in dispensing with the 
services of its staff of Recorders. 
As we may be permitted to doubt whether this can be the 
case for some years to come, the Council of the Zoological 
Society has decided to continue this Record for the present; 
and to increase its usefulness by issuing a certain number of 
separate copies of each of its Divisions. These will be supplied 
on the terms scheduled in the advertisement that accompanies 
this Volume. 
D. SHARR 
Cambridge, 
Oct. 1902. 
