ON THE MIGRATION OF BIRDS. 
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 wita 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 ve writings of those 
who should embrace this part of natural history, 
would throw great light on the subject. But it 
is tobe lamented, that none, except two north- 
ern naturalists, Mr. Klein and Mr. Ekmarck, 
have professedly treated on this point. The 
southern parts of Hurope, which may be sup- 
posed to receive, during winter, many of our 
land birds, have as yet produced no fawnist 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 ceco- 
nomy; and, in such a manner, as does honour 
to their respective countries; we mean Mr. 
