IV: AND REVIVED. 167 
_ If the fand is quite dry, they are feen motion. 
lefs, dried up, and generally bent into a fpiral. 
When confiderably fprinkled with water, they 
foon exhibit figns of life. The tail firft com- 
mences a gentle motion, bending and turning in. 
different directions : the head then moves, and 
afterwards the reft of the body : fo that the whole 
animal foon becomes animated. Whence it re- 
fults, that the fame degree of humidity is not re- 
quired to animate this fpecies as for the wheel 
animal and floth, which do not revive unlefs com+ 
pletely immerfed in water. The eels do not 
change their place: they only extend, contrac; 
turn, and bend. If the fand is thoroughly wet, 
their activity and rapidity of courfe is as great as 
that of the eels of vinegar. Provided they have 
water, they live long in watch-glafles: if there is 
fand at the bottom, they feldom quit it, always 
moving about the grains and pufhing their heads 
among them, which would induce us to fuppofe 
that they do fo in fearch of food, for fome more 
minute and delicate particles are tranfmitted by the 
mouth to the eefophagus. Notwithftanding they 
have been long kept in glaffes, 1 never faw them 
propagate. 
When the water evaporates; they die; but 
they refift death longer than wheel animals and 
floths. A fmall degree of motion remains feveral 
minutes after evaporation. When dead, the fi- 
bs gurd 
