[ l8 9 ] 



a circumftance which feems to prove to demonftration of what 

 fpecies the four fwallows caught in the fhip really were. 



He fays that they rooft on the fand, either by themfelves, or 

 at moft only in pairs, and that they frequent the coaft much more 

 than the inland parts h . 



Thefe fwallows therefore, if they came from Europe, muft 

 have immediately changed at once their known habits : and is it 

 not confequently moft clear that they were of that fpecies which 

 Briffon defcribes under the name of Hirondelle de rlvage du Sene- 

 gal? 



But though it mould be admitted, notwithftanding what I 

 have infifted upon, from Monf. Adanfon's own account, that 

 thefe were really fwallows of the fame kind with thofe of Europe; 

 yet I muft ftill contend that they could not poflibly have been on 

 their return from Europe to Africa, becaufe the high road for a 

 bird from the moft Wcftern point of Europe to Senegal is along 

 the N. Weft coaft of Africa, which projects greatly to the Weft- 

 ward of any part of Europe. 



What then could be the inducement to thefe four fwallows to 

 fly 50 leagues to the Weftward of the coaft of Senegal, fb much 

 out of the proper direction ? 



It feems to me therefore very deaf, that thefe fwallows (whe- 

 ther of the European kind or not) were flitting from the cape de 

 Verde iflands to the coaft of Africa, to which fhort fliphf, how- 

 ever, they were unequal, and were obliged, from fatigue, to fail 

 into the failors hands. 



h Voyage au Senegal, p.. 67. I wiih Monf. Adanfon had alfo informed 

 us whether thefe fwallows had the fame notes with tkofe of Europe, 

 which is a very material circumftance in the natural hiftory of birds, 

 though little attended to by moft prnithpipgifts. Julius Pollux, in his 

 Onomafticon, gives us the different terms for the notes of many birds, 

 that of the (or martin) is -^vpi^siv* 1. V. ch. 14. 



Monf. 



