CURATOR AND LIBRARIAN’S REPORT. 
DURING the past Session, your Curator is pleased to state 
that the Society’s Library and Museum has been enriched by 
a number of valuable and important additions. 
A specimen of the Leisler’s Bat (Pterygistes leislerz), shot 
by MR. J. W. PERCIVAL, at Bowdon, on July 23rd, 1909, has 
been presented by MR. T. A. COWARD. This is the third 
example recorded for Cheshire. 
This species closely resembles the Noctule Bat, but is 
distinguished by several well-marked characteristics. The 
Donor says that its habit of flight is usually at a higher 
elevation than that of the Noctule, and in a zig-zag fashion. 
On the estate of R. T. RICHARDSON, ESQ., J.P., Capen- 
hurst, near Chester, a very fine adult female specimen of the 
Osprey (Pandion halietus) was captured, on May 7th, 1909, 
by the Gamekeeper, from whom it was subsequently acquired 
by the Society. 
A number of specimens have been observed in the County 
at various times (‘‘ Fauna of Cheshire,’’ Coward and Oldham). 
These, however, were invariably immature individuals, and 
were usually taken on the Spring and Autumn migration. 
It is owing to special protection of this bird in Scotland 
that it has persevered so long as an indigenous British species. 
An immature specimen of the Long-tailed Duck, presented 
by the late LIEUTENANT-COLONEL CONGREVE, V.C., is 
worthy of special comment, being new to the Society’s col- 
lection, and one of comparatively few specimens recorded 
from Cheshire. 
Another new and rare addition is a Great Northern Diver 
(Colymbus glacialzs), presented by MR. R. FORSTER, by whom 
it was shot on the Helsby Marshes, on December 2ist, 1891, 
during extensive floods. This species occurs very rarely in 
the County, and only as a winter visitor. 
A Life-history Group of the Cuckoo has been prepared by 
the CURATOR from material and specimens collected in the 
County. The nest contains an almost fully-fledged young 
Cuckoo. A clutch of three eggs of the foster-parent (the 
