r 
13S ihe Pulfation of the Heart. 
pendicularly, and you will fee two fmall 
black Eyes, * each fet between three white 
Plates like polifhed ivory* on one Side two 
fmall ones, and a large one on the other* 
Pull off both the cruftaceous and rhlmy 
Wings which cover a" tender black Skin, 
and removing that Skin, the Pulfation of the 
Heart may be feen beating vigoroufly for 
twelve or fourteen Hours. . 
The Heart of a Snail * is to be found ex¬ 
actly againft the round Hole near its Neck, 
of a white Colour, and may be feen beating 
a .Quarter of an Hour after Diffedtion -f*. 
It may alfo be feen in a Loufe, as I Sail 
(hew when I come to defcribe that Creature; 
and I make no doubt the curious and dili¬ 
gent Enquirer will be able to difcover it in 
Multitudes of other little Animals. 
The perijlaltic Motion of the Stomach and 
Bowels may be feen very difHndtly in Lice , 
Gnats , Flies, & c. and a Multitude of other 
Xnfedts. 
* Power’s Microfcop, Qlfer'vat . p. 36. 
f Swammerd, Fiji, Generate des Infedies , p. JJ* 
\ 
CHAP. 
