Natural Hiftory of — 
Fig, c, N°. xz. is the natural Size of this minute Go 
ralline furrounding the. Stalk ofthe Fucus. 
Fig. C’, exprefies it age by the (oar Glafs of Wil 
for S Microfcope. 
The Body of this Snake-like Cell, when ei byt the 
fecond Magnifier of Wilfon’s Mictofcope, as at Figure D, 
: appears to be jointed in the Middle, and to confift of pa- 
rallel Rings. 
CHAP, 
