No. 50.] 
215 
accumulation of vegetable and animal matter, from the successive 
grovv^th and decay of various organic products. 
The most extensive and important of these alluvial flats, may be class- 
ed as deltas on a small scale, and they extend some distance above and 
belov^ the mouths of the Rondout, Esopus and Catskill creeks. The 
smaller flats are too numerous to mention, but the mud that has accu- 
mulated on them, and w^hich is generally uncovered at \ovf ebb-tides, 
is well adapted for use by the farmer on his soils as a manure. It is 
believed that this material, which is loaded with organic products, will 
soon be extensively used for improving the farms adjoining the Hudson 
river. 
Marsh Alluvions. 
Peat and bog iron ore are the principal marsh alluvions in the coun- 
ties under examination. No beds of swamp and "lake marl," like 
those of Orange, Columbia and Dutchess counties have been observed 
the past season. The peat bogs are not very numerous. The princi= 
pal ones are as follows : 
Cords. 
1. The summit of the Delaware and Hudson canal, be- 
tween Wurtzboro' and Red bridge, in Sullivan county, 
contains about 50,000 
2. A marsh extending down the valley of the Basher's kill, 
from near Wurtzboro' towards Cuddebackville, and 
containing probably 1000 acres, with 1000 cords per 
acre, 1,000,000 
3. A bog a few miles west of Ellenville, (did not see it,) 
say, 100,000 
4. The bog in the valley of Three brooks, south of Monti- 
cello, 500,000 
5. The marsh 1 mile southwest of Monticello, belonging to 
Hon. Mr. Jones, and others, 50,000 
6. The marsh half a mile southwest of Monticello, belong- 
ing to Hon. Mr. Jones, « 8,000 
7. The marsh half a mile west of Monticello, belonging to 
Hon. Mr. Jones, 10,000 
8. Several marshes between Monticello and Bridgeville, on 
the Neversink, 60,000 
9. Bog between Dashville and Esopus, on the north end of 
the Passant Binnewater, say 40 acres, 40,000 
