PREFACE. 
I have now figured, I believe, all the principal fotms of the Skeletons of Birds, and in 
conclusion beg to thank those who have assisted me. I am much obliged to Mr. Gerrard, senior, 
of the British Museum, and Mr. Flowers, of the College of Surgeons, who have always assisted me 7 
in finding anything I wanted in the respective collections in their care ; to Mr. Bartlett, senior, 
also, I am much obliged for He umn Peis regarding the habits of some birds, among which I may 
mention Chauna Chavaria, and Rhynochetus Jubatus ; and to Professor Owen I am much 
obliged by his always giving me access to him, although so much employed, when I wished to 
ask him a question ; to Dr. Gray also I am.obliged for allowing me access to the collection under 
his care. . 
[have added to this Supplement a list of plates of Skeletons of Birds for reference. 
1 Ce EY. VON, 
Hyton-on-the-Wealdmoors, 
Wellington, Shropshire, 
