r 7^3 ) _ _ 
uniformly upon the Bodies to which it faftens it lelf, 
that it touches them in all their Parts ; and then draw- 
ing up a little the Middle of this Flat Part, without ta- 
king off the Edges, (he makes of it, as it were, a little 
Balm which leaves a Cavity in its Middle. This ex- 
cellent Glue fattens fo ftrongly the Tail of the Leech, 
that 'tis a hard matter to pull it away, without making 
fome Rent, efpecially if you draw it perpendicularly 
from the Surface on which the Animal is faftned. But 
that which (urprifes at the firft, is that fattens it more 
ftrongly to the Bodies moft fmooth, fuch as are fine 
Venice GlalTes, upon which Flies have fome trouble to 
creep, than on the more rough Surfaces, becaufe it tou- 
ches the Poliflit Bodies in a greater Number of Parts. 
Add to this a little Oily Glue which it fpreads about, 
and with which it fills exadly the Inequalities of the 
Surfaces. The Leech has always recourfe to this lit- 
tle Inftrument for faftning its Body, to the End it may 
not be fufpended in the Air, while it draws its Nourilh- 
raent by Su&ion, or eife that it be not carried away 
with the Current of the Water, while it carries its^ 
Head here and there for feeking its Nourifliment. 
Its Gut goes in a Streight Line, from the Mouth^ 
to the Anus , as big as a Goofe's Quill , all a- 
long , fet with a great Number of little Valves 
fom*e of which make a perfcft Circle with a Hole in the 
Middle, and others a Half Moon, fome are fliapt Spiral 
ways, and there is a great one of this Sort near the 
Tail, FaSiion'd like a Heart, which leaves only a very 
little Hole, near which is found much Yellow Fat, which 
fills all the Cavity of the Intettine to have an Inch. 
Two little Inteftines or Appendixes, each half an Inch 
long, and of the Bignefs of the Feather of a little Birds 
Wiog, pierce the great Gut in which they are open at 
one end, and Ihut at the other ^ all this Strudlure 
mi kc 
