TRANSACTIONS 
OF THE" 
Dorhebíre Maturalists: Tnion. 
PART 19 (for 1893) 
will include Mr. A. E. Hart’s valuable Report on Yorkshire 
Lepidoptera observed in 1891, and a continuation of Messrs. W. 
NELSON and JOHN W. TayLor’s Annotated List of the Land 
and Freshwater Mollusca known to inhabit Yorkshire. 
PROPOSED DOUBLING OF MEMBERSHIP. 
The Members are reminded of the effort which is now being 
made to double the total number of members. The progress of 
the works which the Union has in hand for publication, including 
Baker’s North Yorkshire, Kidston’s. Reports on the Yorkshire 
Carboniferous Flora, Hey's List of Yorkshire Coleoptera, Clarke’s 
List of Yorkshire Birds, Nelson and Taylor’s List of Yorkshire 
Land and Freshwater Mollusca, is delayed by the want of funds 
available for the purpose. 
A general co-operation of those who are already members and 
who would use their influence with friends, would enable the 
membership to be doubled at once with ease, but it is necessary 
that such co-operation be prompt and general The Secretaries 
will gladly furnish circulars and forms of nomination. 
20th May 1893. 
