ALLUVIAL DIVISION. 
229 
SUPPLEMENT TO THE QUATERNARY SYSTEM. 
ALLUVIAL DIVISION. 
Some omissions were made in the descriptions of the alluvial and quaternary divisions. 
They are supplied in this supplement. 
Localities of Marl. 
[I have not seen the localities here mentioned.] 
COUNTY. 
LOCALITIES AND REMARKS. 
Washington. 
Albany. 
do. 
do. 
Greene. 
Rensselaer. 
Saratoga. 
Ulster. 
Queens. 
C Cleaveland’s Mineralogy, p. 190; 
Baker’s falls. Vide< Webster’s Catalogue of New-York Minerals; 
^ Robinson’s Catalogue of American Minerals, p. 116. 
Bethlehem. Ib. p. 116. 
Helderberg. Ib. p. 131. 
^ S Ib. p. 123 ; 
oeymans. ^ Webster’s Catalogue of New-York Minerals, p. 6. 
Catskill. American Journal of Science, Vol. 3, p. 236. 
Sand-lake. Ib. Vol. 8, p. 36. 
— Steel’s Survey of that county. 
Marhletown, and ( Webster’s Catalogue of New-York Minerals, p. 29; 
containing hones. ( Cleaveland’s Mineralogy, p. 190. 
Newtown, Long island; said to be marl, and formerly used for whitewashing; 
perhaps infusorial earth. 
Peat. 
Peat occurs in the heads of the ponds in the Shinnecock plains, one and a half miles south¬ 
west of Southampton; Coldspring bay, several places in quantity; Canoe place ; Bull-head 
bay, and around a bay between the last and Toad bay, in quantity; and in the mill-pond 
above the head of Mecock bay. These localities are all in Southampton. Peat, sometimes 
of inferior qualities, is found in considerable quantities in such situations as these mentioned, 
around the whole coast of Long island, in places too numerous to particularize. 
On the Origin of Peat. By Dr. Mitchill. 
In 1798 or 1799, Dr. Samuel L. Mitchill was appointed a commissioner of the Agricultural 
Society of the State of New-York, to make an examination of its soils, rocks, etc., with a 
view to the promotion of the agricultural interests of the State. 
