TV. AND REVIVED, 127 
found that they always revived, independent of 
the time they had remained dry. There is now 
before me a remarkable inftance.—Some fand is 
in my poffeffion on which I made experiments 
near four years ago, and it has been kept dry in a 
{mall glafs bottle: when moiftened, the wheel 
animals in it inftantly revive. ‘This agrees with 
what has been quoted from Leeuwenhoeck. 
Baker obferved a fact little lefs worthy of notice. 
He wet the infide of a glafs, where wheel animals 
had been kept dry for fome months, and he faw 
them recover their original vivacity. It is of no 
confequence though they have revived oftener 
than once: the fame fand has been dried eleven 
times, and wet as often. I have uniformly 
feen them die as the water dried, and revive when 
the fand was moiftened. 
However, thefe facts muft be underftood un- 
der fome limitation. Though the animals do 
revive repeatedly, and even after remaining long 
dry, it is certain that the number revived always 
decreafes in proportion to the time the fand con- 
tinues longer dry, and the times it has been wet 
for their refurrection. It is true, I have feen 
their eleventh refurreCtion. ‘he firft time, they 
were-very numerous, but the numbers continually 
decreafed, and at laft became very fmall. It 
fhould be added, that, ftill wetting and drying 
the fand, none revived the fixteenth time. It is 
the 
