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Swallows are Teen during the fummer, in every part 
of Europe from Lapland to the Southern coaft of 
Spain ; nor is Europe vaftly inferior in point of fize 
to Africa. 
If fwallows therefore retreat to Africa in the 
winter, fhould not they be difperfed over the whole 
Continent of Africa, juft as they are over every part 
of Europe ? 
Eut this moft certainly is not fo : Dr. Shaw, who 
was a very good naturalift and attended much to the 
birds in the neighbourhood of Algiers (as appears by 
his account of that country), makes no mention of 
any fuch circumftance, nor have we heard of it from 
any other traveller *. 
It muft be admitted indeed, that Herodotus fpeak- 
ing of a part of upper Egypt (which he had never 
feen) fays, that kites and fwallows never leave it-f-; 
this, however, totally differs from Monf. Adanfon’s 
account, who informs us that they difappear in Se- 
negal on the approach of fummer. 
It feems to follow therefore, from this filence in 
others, that fwallows cannot be accommodated for 
their winter refidence in any part of that vaft con- 
tinent, but in the neighbourhood of Senegal. 
But this is not the whole obje&ion to fuch an 
hypothefis. 
* It may alfo be obferved here, that credit is in fome meafure 
given to M. Adanfon’s eyefight, againft that of all the.Englifh, 
French, Dutch, Portugueze, and Danes, who have been fettled 
not far from Senegal for above a century, many of which have 
fpent the greateft part of their lives there, and whofe notice, 
fwallows feen during the winter, muft have probably attracted. 
■f" Ixlivoi Je xxi xjihiSons Ji el (os (odes ax an 'otiUTWrt, Euterpe, 
p. 08. ed. Gale, 
If 
