ACALEPtLE. 
207 
polype, which I pressed until it entered the stomach, which it does the 
ru °re easily since it is empty at this place and much enlarged. I 
c °atinued to advance the bristle, and, in proportion as it advanced, the 
P°lype became more and more inverted. When it came to the worm, 
% which the mouth is kept open on one side, and the posterior part 
°f the polype is passed through the mouth, the creature is thus turned 
C0l upletely inside out ; the exterior superficies of the polype has become 
interior.” 
'■The poor animal would be justified in feeling some surprise at its 
rif ‘W situation — disagreeably surprised we may add, for it makes every 
Imaginable effort to recover its natural position, and it always succeeds 
m the end. The glove is restored to its proper form. “ I have seen 
Polypes,” says Trembley, “ which have recovered their natural exterior 
ln less than an hour.” But this would not have served the purpose 
°1 our experimenter. He wished to know if the polypes thus turned 
in could live in this state ; he had consequently to prevent 
trom 
the 
J y the neck. 
. It ig nothing for a polype only to be spitted, says Trembley. 
, is in fact a very small thing, as we shall see, for thus reversed and 
‘ pitted they live and multiply as if nothing had happened. 
“I have seen a polype,” says this ingenious experimenter, “turned 
*ide out, which has eaten a small worm two days after the opera- 
l0 n. j have fed one in that state for more than two years, and it 
as multiplied in that condition. 
‘"c in could nve m uns suaie , ™ ™ ' 
lt; from rectifying itself, for which purpose a needle was run through 
6 body near the mouth — in other words, he impaled the creature 
bv ” 
mside 
°n. 
Having experimented successfully myself, I was desirous of having 
testimony of others capable of forming opinions on the subject. 
• frllamand was persuaded to put his hand to the work, which he 
j'Hth the same success I had met with. He has done more, 
avm g succeeded in permanently turning specimens which had been 
P ley iously turned, and which continue to live in their re-inverted 
, a fr > he has seen them eat soon after both operations ; finally, he has 
nr ned one for the third time, which lived some days, but perished 
having eaten anything, although it did not appear that its 
ea H was the result of the operation.’’ 
We have said that the Hydra viridis has neither brain, nervous 
‘ 8 frm, heart, muscular rings, lungs, nor liver ; the organs of the 
