244 Of the M u s cle, 
cles, which one would aimed: imagine to be 
Animalcules *. 
The Threads or Strings, which we term 
the Beard, are compofed of a Glew which 
the Mufcle applies by the Help of its Trunk 
to fome fixed Body, and draws out as a Spi¬ 
der does its Web, thereby faftening itfelf, 
that it may not be wafhed away. If Mufcles 
be put into Salt and Water, we may have 
the Pleafure of feeing them perform this 
W~ork, and faden themfelves to the Sides or 
Bottom of the Veffel we place them in. 
Cockles, Scallops, Limpets, Periwinkles, 
and Abundance of other Shell-dfh, are Ob¬ 
jects that have as yet been very flightly ex¬ 
amined by the Microfcope 3 and therefore the 
ferious Enquirer into Nature’s fecret Opera¬ 
tions may here be certain of difeovering 
Beauties which at prefent he can have na 
Conception of. 
* Phil. Tran/. Numb. 336. Arc, Nat. Tom. II. p. 19. 
Tom, IV. p« 423, &c. 
CHAP^ 
