168 ANIMALS KILLED Iv. 
gure of the body is changed: the length is con- 
tracted, and the breadth diminifhed. They in- 
fenfibly refume their original fize on humectation, 
and animation returns. ‘There are conditions 
neceflary for refurrection : When the eels are in 
fand, a.quarter of an hour is fufficient for recal- 
ling them to life; but in pure water, there is a. 
ereat difference according to circumftances. If 
only the firft or fecond time of revival, there is 
not much difference in the time required for re- 
furrection; but, in proportion. as the number of 
refurrections increafes, the time neceflary for re- 
vival always becomes greater: an hour at leatft, 
and fometimes more, is required for the fourth 5. 
for. the fifth ftill longer, and fo on for the reft.. 
‘Che frequency of refurrection in. pure water, as 
in fand, is limited, like that of wheel animals and: 
floths. ‘The eels die for ever at the feventh or 
the eighth, or, at moft, the ninth refurrettion ; 
and, although moiftened again, they revive 
mo more. Part of their rapidity and activity is 
loft in each refurrection, fo that the laft is but a 
fimple change from immobility to languid con- 
torfions of the members. 
Here then are three {pecies of animals, inhabit- 
ing the fand of roofs, which nature has permitted 
to revive after death. ‘Thefe three are the only 
inhabitants of this fand, at leaft I do not think I 
have ever teen other animated beings there, hav- 
ing 
