ON THE MIGRATION OF BIRDS. S79 



that lie on every side of him. He should attend 

 likewise to the weather; and to the abundance or 

 failure of fruits and berries ; as on these acci- 

 dents many curious remarks may be founded. 

 He should cultivate an acquaintance with the 

 gentlemen of the navy, and other sea-faring peo- 

 ple; he should consult their journals, to disco- 

 ver what birds light on their ships, at what sea- 

 sons, in what latitudes, and in what weather, 

 and from what points; and thus trace them in 

 their very course. 



A comparative view of the writings of those 

 who should embrace this part of natural history, 

 would thi^ow great light on the subject. But it 

 is to be lamented, that none, except two north- ' 



em naturalists, Mr. Klein and Mr. Ekmarck, 

 have professedly treated on this point. The 

 southern parts of Europe, which may be sup- 

 posed to receive, during winter, many of our 

 land birds, have as yet produced no faunisf to 

 assist the inquiries of the naturalists, which 

 must account for the imperfect knowledge we 

 have of the retreat of many of our birds. 



We must not omit, however, our acknow- 

 ledgements to two eminent pens that have treat- 

 ed this subject as far as it related to rural oeco- 

 nomy; and, in such a manner, as does honour 

 to their respective countries; we mean Mr. 



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