(28) 
those in the Dock-Yard, or at the western end of 
Mount-Wise, are so blended with the surrounding 
matter, as to form one solid and compact mass ; 
and it has been with some difficulty that Ihave 
succeeded in obtaining detached and perfect speci- 
mens. The prevailing colours of this stone, are, 
a deep blue and brown, variegated with others of 
a lighter and different hue, according to the Ani- 
mal Remains which are respectively contained in it. 
This stone is likewise capable of receiving a very 
fine polish; by which process also, the shells, and 
Madreporites, are most satisfactorily brought out to 
view, and rendered beautifully distinct. 
In breaking several of these fragments, for the 
purpose of examining their contents, but more par- 
ticularly for the sake of obtaining detached shells, 
other subjects have presented themselves to notice: 
some of which, in their forms, and in their mark- 
ings, bear a strong resemblance to what Mr. Park- 
inson, in his Second Volume of Organic Remains, 
Plate 10. Fig. 12, denominates an Alcyonite, found 
in the chalk-pits of Wiltshire. How far my conjec- 
ture may be right, I will not pretend to say; but, 
