16 
21. Remarkable nodule, or loose-rounded lump, four- 
teen inches long and eight inches broad; dug from one of 
the hills near Corlaer’s Hook, in the seventh ward of New- 
York city; and disclosing, by its longitudinal fractures, 
cardites and pectinites, of remarkable size and distinctness. 
—J. M‘Comb. 
22. A mass of marine concretions, found near St. Regis, 
River St. Lawrence, near the line of Lower Canada.—Pro- 
fessor Ellicott. 
23. Several specimens of petrified wood; from Samuel 
H. Smith’s land, two miles north of the capitol, at Wash- 
ington city. 
24. Petrified stump of a pine tree standing in water. 
South Carolina. 
25. Large fragment of a fossil terebrum, or screw-shell. 
Mexico, Del Rio. (See Art. 10, Shelf No. I.) 
- 26. Organic remains, eight in number, from Becraft’s 
‘mountain, one mile and a quarter S. E. of the Court-house 
in Hudson city, and five hundred feet above the level of 
the river; consisting of madreporites, flustrites, pectinites, 
terebratulites, and some other species, as they have been 
broken from the solid stratum of rock, in detached pieces. 
—Colonel Darling. | 
27. A splendid slab of the marble from the stratum of 
Becraft’s mountain, abounding in the aforesaid and other 
relics; nearly two feet long, and more than one foot broad ; 
forming an elegant and uncommon lumachella marble, 
named the Darling marble. : 
28. Polished lumachella marble, from the quarry at 
Sodus, New-York, south side of Lake Ontario." | 
29. Encrinites, in polished marble; from Cherry Valley, 
New-York.—Governor Clinton. 
30. Polished lumachella, with shells, encrinites, and 
entrochites. Hurley, Ulster county,. New-York.—l. C. 
Hart. ; 
31. Polished marble, filled with remains ef molluscas 
and radiaries ; from a quarry near the Juniata, Penn., six 
