Of FoSSIt- SHELLS, &c. 115 



fome refinous tree. The fagaccous Da Cvjla has given a figure of 

 one like it in the Ph. Tranfadt. before cited. The ftone is of- a 

 line fhape, thin at one edge, and channelled through the middle^. 

 like the molding of a cornice. 



11. Another, with large oval cell$j and the apices oval, in the 

 fame kind of flone, and of the fame fliape, but pot channelled 

 through the middle. From the ojlium of Sbit/ington-'brook.. Tliey 

 are very frequent, both with channels and without, on the flior.es 

 of our brooks and rivers. I found one near a eoal-work upon 

 Catlefy-hill, the cells deep and numerous, feparated only by thin 

 partitions. I have another from the more of the river Coquet, 

 above Rothbury. 



12. An elegant reticular work With oblong hollows, evidently 

 the impreflion of the bark of fome tree when the fap was in it, 

 the rugofe ftrias as fair as if juft made. In freeftone, from a quarry 

 at Simonburn, below the fchool-houfe. 



13. Another of the fame kind, in freeftone, from the more of 

 the brook Hextold, at Hexham ; the hollows deeper, but the fine 

 rough fkin obfcured by the floods. 



14. Two pine-branches, very fair, with impreffions of the bark, 

 one of them forked ; and a rhomboidal impreflion of the cortex, 

 of another in relief ; in freeftone, from the fliore of the brook 

 below Simonburn-ca.ft.le. 



15. Another pine-branch, with part of the bark, and fome of 

 the leaves very fair, of a tawney- black colour ; in freeftone, from 

 Gofton; many oval cells on the exterior furface, with central 

 apices. 



. A 



