528 Letters, Extracts, and Notes, 



remains of the Arcliaeopteryx in the Berlin Museum. These, 

 however, certainly seem to have been misinterpreted, for the 

 feathers to which he evidently refers are those which invested 

 the tibia. No one who has studied the original remains of 

 this fossil would for a moment agree that these afford 

 evidence for this " femoral tract.'' 



A Bibliography of British Ornithology. — Messrs. Mac- 

 millan & Co. announce the forthcoming pui)licatioii of a 

 work on this subject by Messrs. W. H. Mullens & H. Kirke 

 Swan. It will be issued in six parts, each at 6s. net, and 

 will contain biographical accounts of the principal writers 

 on British Birds and bibliographies of their published works 

 from the earliest times to the end of 1912. 



I 



