of the ESCHARA.. 
“And Fig. E, the magnified one of this Taruhtacon: This 
belongs properly to the Pudswlaria of Linneus. 
N°. 7. Efchara millepora lapidea, infiar pimicis porofa. PlateXXVIT, | 
Fig. f.F. |] 
Porous E/chara. 
75 
Af This ftony Incruftation is often found on the Renlei@osa 
ralline, in irregular Lumps, appearing like white Sand ftrongly 
united together. But in the Microfcope, it feems to confift 
of an infinite Number of fmall round Cells, placed in no 
regular Form, only the circular Entrance to the Cells appears 
on the Outfide of each; fo that, in the Microfcope, it looks 
like a Pumice-ftone. 3 
Fig. f; N°. 4. exhibits the natural Size of the Cells, which 
are magnified at Fig. & But the Incruftation itfelf 1s often 
- found much larger than the Size of the magnified Part Bs — 
Leer sige CELA: 
