Chased So We AL Li Of} WS, 
In cold countries, a defect of infect food on 
the approach of winter, is a fufficient reafon for 
thefe birds to quit them: but fince the fame caufe 
probably does not fubfift in the warm climates, 
recourfe fhould be had to fome other reafon for their 
vanifhing. | 
Of the three opinions, the firft has the utmoft 
appearance of probability ; which is, that they re- 
move nearer the fun, where they can find a conti- 
nuance of their natural diet, and a temperature of 
air fuiting their conftitutions. That this is the cafe 
with fome fpecies of European fwallows,. has been 
proved beyond contradiction (as above cited) by 
M. Adanfon. We often obferve them collected 
in flocks innumerable on churches, on rocks, and 
on trees, previous to their departure hence; and 
Mr. Collinfon proves their return here in perhaps 
equal numbers, by two cufious relations of un- 
doubted credit: the one communicated to him 
by Mr. Wright, matter of a fhip; the other by the _ 
late Sir Charles Wager; who both defcribed (to the 
fame purpofe) what happened to each in their 
voyages. ** Returning home, fays Sir Charles, in the 
<< {pring of the year, as I came into founding ia our 
“* channel, a great flock of {wallows came and fet- 
tled on all my rigging; every rope was covered; 
they hune on one another like a fwarm of bees; 
the decks and carving were filled with them. 
“* They feemed almoft famifhed and fpent, and were 
“only feathers and bones; but being recruited 
“< with 
G6 
<4 
407 
