OF BIRDS. 
i‘3 
There are many other fpccics, but little dif- 
tinguifhed by their habits, from thcfc mentioned, 
or remarkable for their plumage. 
Thefe birds, as well as Swallows, Nightin¬ 
gales, &c. which feed on infects, are of effential 
fervice to man. 
Without their afiiftance, wc fhould be aflailed 
by myriads of infects; w'e fhould be tormented 
b.y their'bites and flings; they would devour the 
produce of our lands, defile our provifions, vyhich 
in vain we fhould endeavour to preferve; they 
would infeft our chambers, and difturb our reft; 
for fo rapid is their multiplication, that our at¬ 
tempts todeftroy them, could fcarcely be fuccefs- 
ful. To this ufeful tribe of birds, we are indebted 
for our deliverance ; by their means infe&s are 
kept in fuch a degree ol fubje&ion, as only to 
confume that which is fuperfluous, and which 
without their help would become offenfivc. 
The advantages we have derived from our little 
deliverers during the fummer, w'e feel in autumn; 
towards the clofe of that fe'afon, they leave us to 
fly to milder climates, in pui fuit of the infedt food, 
which they feem to have a pre-fentiment is foon 
to fail them here. 
During the interval between their departure, 
and the firft frofts, infedts incrcafe in abundance, 
myriads of gnats infeft the air, and their rapid 
multiple- 
