In September 1971 when the Sub-Department of Ornithology 

 waa established at Tring, the Bird Section Library was 

 transferred there. Ornithological books marked 'Z in 

 this printed catalogue nay, therefore, be at TriAg,now f 

 instead of, or as well as, in the Zoological Department 

 Library. The card catalogues in the Catalogue Room 

 have been altered to show present locations. 



