96 Commercial Notices, 



from their neighbourhood, and forced to hunt for himself, he retires more 

 inland, in search of young pigs, of which he destroys great numbers. He 

 will also attack old sickly sheep, aiming furiously at their eyes." 



The above extract is so interesting, that I have transcribed it without 

 abridgment, particularly as the great expense of the work will naturally 

 prevent it from being in the hands of many of your readers. Our Natural 

 History Society here fortunately possess a copy. To conclude, the spe- 

 cies of eagles inhabiting Great Britain appear still to be imperfectly under- 

 stood. The bald eagle, or white-tailed eagle, above mentioned (Falco leuco- 

 c^phalus Lin.\ seems to be the adult of the sea-eagle of Pennant, as the 

 ring-tailed is of the golden eagle (F. chrysaetos Lin.). The fishing eagle, 

 alluded to by Wilson, is likewise found in Britain. I am, Sir, yours, &c. 

 Manchester^ March 20. 1828. Z. B. 



The vignette to which Z. B. alludes was that of our first Prospectus, in 

 which the trees, as well as the eagle's head, were not very correct. Our 

 present vignette will be found considerably improved in both these parti- 

 culars. — Cond. 



Art. XII. Commercial Notices, 



Exchange of Shells. — Sir, I take the first advantage of your well pro- 

 jected Magazine of Natural History, to propose an exchange with some of 

 your conchological readers. My cabinet is deficient in the following species 

 of A'nodon, for which I shall be happy to give, in exchange, the duplicates 

 of some very fine Uniones, I have just received from America. 



A'nodon rugosus, Swainson's Zoological Illustrations y vol. ii. pi. 96. 

 A'nodon purpurascens, J^if/. vol. iii. pi. 160. 

 A'nodon crassus, /Aic?. vol. iii. pi. 167. 

 A'nodon elongatus. Ibid. vol. iii. pi. 176. 

 Anodonta exotica, LamarcVs Anim.y vol. vi. p. 87. 

 Anodonta patagonica, Ibid. p. 88. 

 Birmingham^ April. S. C. 



Brookesian Museum. — The zootomical collection of Joshua Brookes, 

 Esq. F. R. S. &c., the celebrated anatomist, will be sold by auction about 

 the middle of May, unless previously purchased by private contract. Ca- 

 talogues are generally published of such collections, to give an idea of 

 their contents ; but so much does that of Mr. Brookes exceed all others 

 that we remember in extent and number, that even the prodromus, or 

 forerunner of the catalogue, is a pamphlet of twenty pages. The catalogue 

 itself will be published as speedily as possible, arranged, like the prodromus,- 

 according to the circular form. 



A Collection of Shells and Minerals, of considerable interest, though 

 hitherto little known to the public, will soon be exposed for sale by Mr. 

 Sowerby, the author of The Genera of Shells, &c. (p. 56.) 



Lectures on the Universe, including a general view of every department 

 of natural history, will be delivered in the course of the summer by Mr 

 E. Donovan, F. L. S. M.W.S. &c. &c., author of various works on fishes, 

 birds, &c. 



Private Lessons on Botany are given by Miss Kent, the elegant authoress 

 of Flora Domestica and Sylvan Sketches, of whose taste and talents in her 

 department, an article in a succeeding Number will bear ample testimony. 



