XV1U 
'-rnmmtmm min i u n iwinrfamMiM——————— 
fure ; with thefe they balance themfelves in flight, as 
a rope-dancer does with his pole loaded at each end t 
thefe bladders being hollow may ferve to produce 
"founds, and be a means of calling to each other. 
ZEGS AND FEET. 
% 
The legs and feet of infefls are wonderful in their 
ftru£lure and contrivance, according to their diffe¬ 
rent circumftances and neceflities of life ; and afford 
a pleafing variety of objects for the microfcope. 
It is pretty to obferve the fharp hooked claws, and 
the fkinny palms of fome flies ; which enable them to 
walk on glafs and other fmooth furfaces, (even with 
their bodies hanging downwards) by means of the 
preffure of the atmofphere : this they are not able 
to overcome in cold damp weather ; but flick fafl 
"and die. Others have a fort of fpunges which pre- 
ferve their claws from being broken or blunted by 
ftriking againfl hard bodies ; as the foft flefhy protu¬ 
berances at the bottom of the feet preferve the claws 
of cats, &c. The fpider has each foot armed with a 
comb ; probably to fecure the 5 threads which iffue 
from fo many orifices, from tangling. 
ANTENNAE . 
The antennae are various : thofe of the cockchafer 
open and fhut like the leaves of a book 5 or the folds 
of a lady’s fan, 
TONGUE : 
