3 , Of the Barnacle.' 



to the Number of twenty or more, 

 gradually leffening in their Length, 

 and forming irregular Curves inclofing 

 one another. By the Motion of thefe 

 Horns, which may be exerted in 

 fuch a Manner, as to play either 

 within or without the Cavity of the 

 Shell, it forms a Current in the 

 Water, which brings with it the 

 Prey it feeds upon. In effect, I have 

 fometimes found upon expoiing the 

 whole Groupe of Horns together with . 

 the Head of the Fiffi in the Mi- 

 crofcope, the better to obferve their 

 Difpolition, two fort of Animalcules, 

 not bigger than a Grain of Sand, 

 the one refembling a Crab, the other 

 a Pulex aquaticus^ entangled in the 

 long Hairs which fringe the Con- 

 cave of each Horn. 



Plate vt. Every Horn confifts of feverai 

 Tig* 6 - Joints, and each Joint is furnimed 

 on the concave Side of the Horn 

 with a Brufla of long Hairs. The 

 Horns, when expofed in the Micro- 

 fcope, appear fomething opake ; but 

 may be rendered tranfparent by ex- 

 tracting out of the interior Cavity a 

 jBundle of longitudinal fibres, as the 



Micro- 



