na conjlmtesl and that they are LiguU^ fafcmve membranO' 
cea&exChyhgenitc^: But thofe many Phy(itians> who have 
obferved it to move^ and therefore to be an Animal^ and 
alive 5 do eafiiy confute him, as ^ Gahucinus mentions 
one voided by a Child two years^ and four months old 5 
that being put into water lived almoft a day. And a re- 
markable inftance I had of \u in t that I met with upon % 
diffeftion of a Dog in tht Theater of qmv CoUedge » where 
feveral of the Members were prefent. I fhall therefore 
^mention what particularly I obferved of it i and the man- 
nerhow it did perform it V whi ch was very pleafing; and 
in different forms. For tho all was performed by con- 
trading* and fliortning the Joynts ; yet fometimes it ren- 
dered the body that was flat, round, and a Cylinder; o- 
.ther times it made a deep hollow or concave* on one fide, 
2nd a Convex on the other 5 but moft times there was a 
"bellying out at the edges* about the middle of the Joy nts 5 
and tho that part towards the was very flender ; yet 
^ upon Contraction it would become as broad as the laft 
Joynts. This contraction of the Joynts I fometimes ob- 
ferved, at feveral places at ;t he fame time, at fome diftance 
from one another** which muft needs much advantage it's 
progreflive motion : fince being of fb great a ien^h^ other- 
Wife it could make but fmall advance; which is perhaps 
tequifite* that it might recove^r k felf, when the defcent 
of the f^r^j- do drive it downwards. And for the advan- 
tage too of it's motion 5 at every Joynt there is a promi- 
nenceofthe former, over thie; later 5 which likefomany 
Scales on the) belly of other J^epiks do perform the ufe of 
Feet, . . ''-^r^AU D'Mi''^-Ai'Hiri .x^:,^-^ ^i!- 
But I find that thofe whocldmit this /^cm tobe alive, 
have feveral of them very different thoughts of it 5 and 
. many there.are^. .who do aCTert* that 'ti$ not one, but 
y Gab^c, Cmmmt» de LHtnbricis* 13» 
many 
