204. NATUARL HISTORY. 
ed in a fharp point; and the mouth, or fore part, which it could draw 
in, was formed in fuch a manner, that it appeared to be cut off, 
In the bowels of the fith that have tape Worms, there have been 
found {mall creeping Worms upon the liver, almoft an inch long: they 
had the fame colour and fhape as earth Worms: thefe, when they 
have been thrown into cold water, have been feen to {fwell, to grow 
iff, and to enlarge themfelves, fo as to break the fkin of the Worm : 
and then the dead tape Worm has been found to lye at the bottom, 
thrice the length of the former. - 
Mr Fry/ch has been as careful in examining the Worms of a human 
body, and he affirms, that they confit of three parts, the outermoft of 
which is the fkin, and the innermoft two guts, one long, and the other 
fhort : the fkin is thick, and befides the aperture of the mouth, no hole 
can be found im it: this mouth is mof diftina in the leffer fort, and 
the lips may be plainly feen, by which it adheres to the inteftines like 2 
Leech: the greater have a hooked mouth, and fomewhat in the fhape 
of a blunt wedge, which is very hard; and with. this hook it fticks fo 
clofe to the inward cuticule of the inteftines and pylorus, that a tuber- 
cle or callus may be feen here and there thereon: the nearer the Worm 
is to the ftomach, the callus is always the greater, efpecially in fows, 
to the middle of which the head of the Worm {ticks by its hook, in — 
fuch a manner, that the defcent of the aliment from the ftomach, though 
never fo plentiful, could not force it'off :, the tail or lower part of the 
Worm is folid, for the cavity of the belly is not continued to the ex- 
’ tremity. It has no vent, or one fo {mall, that the excrements could 
not be forced out by prefling the body; but from the mouth it will 
void when touched gently, a fort of a watery. liquor, that is found in 
the belly, where there is a fpace between the two guts, efpecially be- 
tween the navel and the mouth. He calls a fort of ligament the navel, 
which is the fixth part of the body in length from the mouth, and keeps 
the long gut fufpended by its middle and fuller Part, leaft the watery 
~ Jiquor that lies about it, fhould fall into: the lower part of the belly, 
and prefs the finer parts that are not fo full. By this longer gut, which 
may be likened to a ftomach, the Worm is nourifhed wit a pure and 
white juice, like chyle; the fhort gut feems defigned for the excrements, 
it being full of matter, that {mells like the human fecis; this is black, 
and has no fold or bending. : 
- When thefe Worms are ready. to undergo their transformation, they 
are fuller of this white fluid, and appear of a more fhining white; but 
the lefler become more red, and are much of the colour of the fkin: 
this white gut, which is the principal inner part of the Worm, he fup- 
pofes to be the tape Worm, which receives its nourifhment in the {kin 
of the former, till it is come to a proper fize, and then it cafts its flough, 
much in the fame manner as a Butterfly : the tape Worm is always 
three times the length of the former Worm, and is of a white colour 3 
and he has often feen thefe Worms that have been killed by mercury, — 
voided with the {kin broken as above; and’what confirms this conjec- 
ture is, that thofe found in fith, when thrown into cold water, which — 
breaks the fkin, always produces tape Worms, three times the length 
of themfelves: thefe Worms, that is before they are changed, do not 
_ deem to have any parts of generation, which are plain and evident in 
earth Worms. phere 
: The 
