ADVERTISEMENT. 
WORES PUBLISHED BY THE SAME AUTHOR. 
A HISTORY UF THE RARER BRITISH BIRDS: 
Being a Supplement to Bewick. Price 10s. Cloth. 
A MONOGRAPH ON THE ANATIDA : 
Being Descriptions of the Species of Anatidee, with many Plates, both Anatomical and of Species. 
Price Four Guineas, Cloth, 4to. (A few copies only of the above are left.) 
OSTEOLOGIA AVIUM: 
Being Sketches of the Osteology of Birds. Two Vols. 4to. Cloth. Price, £7 5s. 
SUPPLEMENT TO OSTEOLOGIA AVIUM, 
Containing 18 Plates of Skeletons, and Trachea of the Anatide. 30s. Cloth. 
To be had from R. Hopson, Printer and Publisher, Wellington; or from the Author. 
