17 
miles below Huntingdon. The stratum is underlaid by 
indurated quartzy sand; bas an inclination of about 83° 
- from the horizon, and the dip is towards the S. E.—C. 
Loss. 

N° V. 
The fifth Shelf. 
1. Cuaxx from Brighton, in England, penetrated by the 
pholas dactylus, that loves to inhabit the solid rocks, which 
it excavates ; with shells of the pholas itself.—Goodsett. 
2. Calcareous rock of Minorca, inhabited by the myte- 
lus lithophagus.—Surgeon Jackson, U. S. Navy. 
3. A bottle, containing preserved individuals of the my- 
telus just mentioned, in a condition fit for dissection. Same 
locality.—Lieut. Cocke, U. S. Navy. 
4. An elegant pair of cockle-shells, from Thanet island, 
Kent county, England; filled with chalk, and found in a 
cretaceous stratum, three miles from the sea, and one hun- 
dred and twenty-seven feet below the surface.—Ramage. 
5. Superb specimen of encrinites and entrochites, in 
calcareous carbonate. England.—Major James Mitchell. 
6. A notable fossil, containing entrochites, madreporites, 
terebratulites, pectinites, and other articles ; said to have 
been found.in Wales.—Mrs. Jayne, wife of Capt. Jayne. 
7. Seven specimens from Havre-de-Grace, in France, 
or brought by a ship from that port; being carbonates of 
lime, containing madreporites, buccinites, terebrites, car- 
dites, &c. in high preservation. 
8. Sixteen pieces, from the rock of Gibraltar. 

(a) Two of the original, or primitive rock, constituting — 
that promontory of Europe; and one of them carrying the - 
lichen, or i a a vegetable natural to it. Dae 
7 
