anes 
396 THE NATURAL HISTORY ° 



Count Buffon tried a fimilar experiment with frogsa 
“fh, in the month of F wy ; thofe which he put into W 
_ ter, which was open to the air, and were allowed to rife t 
the furface, continued to live; but thofe that were put into 
a vellel of water, under circumflances exaélly fimilar, except 
that they were reflrained from coming up quite to the furface, : 
- foon fhewed fymptoms of uneafinefs, and died ; fome in fis 
‘hours, and thofe that furvived the longeft, in two days. 
Mr. Frifch tied to the legs of Swal lows, threads dipped im 
water colours ;. the next year, he afferts, that he faw he 5 
7 birds, and that the threads had not loft their colour. - 
emt OND TIONAL OnsERVATION. 
.“Mr.'White, the ingenious author of the Natural Hiflory ot 
Selborne, whofe remarks well deferve the attention of every 
~-ornithologift, from repeated obfervations, inclines to the op 
~ nion, that many of the Swallow kind do not depart from this 









\Wland, but retire to holes and caverns, from which they are 
allured’even in the winter, when the weather is warm and 
\ 
Ipwings.. hb , | | - 
“Tus CHIMNEY SWALLOW. _ 
~The forehead and chin, a reddith chefnut colour ; the pla- 
mage above blackifh, gloffed with purple; beneath white; the : 
tail forked ; all the feathers in the tail, except-the two int fie 4 
amuiddle, marked with an oval white ipot, near the eat 
The Chimney nthe feem by. inflindea a 
tached to the habitations of men. T hey. build 
7 their nefts i in our chimnies, and even in cham 
: bets 
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