148 
[Assembly 
Uniones and Anadontas, (called by the people clams) and small uni- 
valves of Lymnia, Physa heterostropha, Planorbis trivolvis, and P. Cam- 
panulatus, occur here, and aid in the formation of the marl beds. Ma- 
ny bushels of Uniones and Anadontas were seen in piles on a small 
island in this lake, where they had been carried by muskrats, to devour 
the animals contained in them. 
Numerous localities of shell marl were observed, of which the follow- 
ing are the most important. 
Crysler's Pond, in Copake, containing probably 20,000 loads. 
RhodaPond, do do 30,000 " 
Woodward's do do do 28,000 " 
Buttermilk Pond, in Pine Plains, do 70,000 " 
Marsh in Pine Plains and Stanford, between Stessing 
Pond and Attlebury, 500 acres in extent, and an 
average depth of three feet, „ » 1,500,000 " 
Rev. Mr. Gates, of Lower Red-Hook, informed me of 
a locality of marl in the south part of Red-Hook, 
which probably contains 5,000 " 
Otis C. Bowman also informed me of a locality on 
Rowland Story's farm, in Milan, a quarter of a mile 
east of Lafayette Corners, containing probably .... 5,000 " 
Thompson's Pond, in Stanford, do 150,000 
Upton's do do do .... 100,000 " 
A marsh in Rhinebeck, do .... 5,000 " 
Chalk Pond and Round Pond, in Amenia, 500,000 " 
Deacon Sanford's meadow, two miles east of Amenia, 2,000 " 
Marshes in Clinton, 30,000 " 
Mr. R. Suckley, of Rhinebeck, informed me of a loca- 
lity of shell marl on his estate. He is about apply- 
ing it to his land as a manure. Its contents may 
probably be 10,000 " 
Another locality, on the farm of Major Pultz, in Rhine- 
beck, is said to be extensive, probably contains .... 20,000 " 
Long Pond, 1^ mile east of Upper Red-Hook, con- 
tains shell marl. Mr. Merrick reports that the bed 
is quite extensive, and it may probably contain .... 150,000 " 
Marl is supposed to exist in abundance in the ponds and marshes in 
Clinton, judging from what we could learn from the people. We had 
no means of examining, as there were no boats on the ponds. 
