74 Natural Hiftory 



which thefe are formed, is of a firmer Nature ; it was taken out 

 of the Sea, at a great Depth, near Falmouth ; looks fmoother 

 and whiter than this now before us, and is without Hairs. 



While I was at Brighthelmjioiie^ I had an Opportunity 

 of feeing the Animal, which belongs to thefe Cells. It is a 

 Polype witii i 2 Tentaculiy inclofed in a fmall Tube, in the 

 Middle of the Cell, as it is reprefented magniiied, at Fig. D r, 

 in Plate XXIX. When they are difturbed, they draw them- 

 felvTs into their Tube or Sheath, which clofes on them j and 

 fmk, together with it, into their Cells. 



Plate XXV. jsjo, ^. Efchara millepora arenofa Anglic a. R. S. p. 31. 

 '^' ^" Lorka vjarina Imperati. 688. 

 Englijlj fandy Millepoj-a. 



Upon examining this Sea-produ6tion in the Micro^ope, 

 it appears to be a Colledion of Sand, united by the vifcid 

 ' Matter of fome Sea-Infeds, and difpofed in a flat thin Sur- 

 face, full of fmall Cavities, where the Infedrs have been. 



Fig. ^, in Plate XXV. is the natural Size of a Part of it. 



N'. 6. Efchara millepora^ minh?ia^ crujlacea^ dilute-pwpu- 

 Plate xxvTi. j-^^^^ celluHs tuhifoi'mibus^ oj'diiu fere equally &' parallelo 



Fig. e. E. 1- r r ' 



dijpojitts. 



Small purple Efchara. 



This lucruftation is compofed of circular Rows of very 

 fmall, and almoft parallel Pipes, of a fcmitranl'parent faint 

 purple Colour. It is found furrounding the Stalks of Fuciis s^ 

 and the denticulated Corallines. 



Fig. ^, N°. 3. Plate XXVII. is the natural Appearance. 



And 



