DD 
15. Productus, or Anomia productus. Orange, New- 
Jersey, near the Springs.—Goble. _ ) 
16. Terebratulites, myas, &c., thickly distributed 
through wacke. Freehold village, Greene county, New- 
York.—J. L. Platt. me 
17. Pectinites. Shelborne, New-York. \ 
18. Fossil madrepore, strongly marked. Oxford, Che- 
nango county. Probably of an extinct species.—Uri 
Tracy. sic 
19. Fragments of argillaceous slate, taken from an ex- 
cavation very near the river Hudson, not far north of 
Poughkeepsie village; containing peculiar characters of 
whitish upon a blackish base, with pyrites, strongly signi- 
ficant of organic remains.—Green.—Of what kind ? 
20. The memorable breccia, constituting the banks of 
the Mohawk River, some miles above Schenectady: wa- 
ter-worn pebbles, seeming to be of the sorts that are found 
on the sea-coast, but cemented in a way that excites full 
admiration from chemists and geologists; showing that 
inland waters, pro rata, operate very much like the floods 
of the ocean. 
21. Mold of a spiral univalve shell, more than two 
inches long; from Adams’ village, Jefferson county, New- 
York, where they are said to be frequent in lime-rock. 
22. Rock from Coeymans town, Albany county, filled 
with shells, cardites, pectinites, entrochites, &c. (See the 
great slab, of which the present is a fragment, at the en- 
trance door, more than three feet long and eighteen inches 
broad.)—R. Strong. 
23. Brown oxyd of iron, containing entrochites and 
shells. Oneida county, New-York.—Gov. Clinton. 
24. Black marble, sawed out and smoothed on three 
sides, and on the fourth displaying different sorts of shells. 
Kingston, Ulster county, New-York.—P. Wynkoop. 
25. Lumachella marble, with one smoothed side to ex- 
hibit the shells. Esopus; same locality ; very like that 
from Coeymans, though finer, and more nearly resembling — 
ag 
