326 Letters, Extracts, Notices, &^-c. 



arranged upon a principle which may be imitated with ad- 

 vantage in other museums intended for instruction. 



Dates of Publication of Jardine and Selby's ' Illustrations 

 of Ornithology .' — The determination of the dates of publi- 

 cation of the separate parts of this work from ordinary sources 

 is, with one or two exceptions, impossible. I am much in- 

 debted to the courtesy of Messrs. Longmans and Co., who 

 acted as agents for the sale of the book, and who, at my 

 request, have kindly searched their registers and have sup- 

 plied me with the dates on which they received the various 

 parts from Messrs. Lizars (the publishers). 



The collation was a matter of considerable difficulty, but 

 the following is, I believe, a correct statement : — 



* See Vol. II. pi. 100. f Damaged and delayed. 



t 13P-lol are dated 1835. 



d 



