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sulphur springs and some beds of iron ore. I have not yet visited this 
county, and such is the short time still left for survey, that it is not pro- 
bable that I shall add any thing further from personal examination. 
SUFFOLK COUNTY. 
The mineralogy of this county is of course similar to that of Kings 
and Queens. Thus it contains hematitic iron ore, but not in large and 
important beds. Iron pyrites and lignite are also associated with a 
w^hite astringent clay, as on other parts of Long-Island, w^hile magnetic 
iron sand and garnet sand are found along the whole sea shore. It is 
indeed so abundant in some places, especially after storms, that it may 
perhaps be collected for the purpose of reduction. 
Salt is manufactured on some parts of the shore of Long-Island, by 
the exposure of sea water in shallow vats to the sun and wind. 
SULLIVAN COUNTY. 
Although the number of minerals in this county is not large, their lo- 
calities are of considerable interest. I refer particularly to the mines of 
lead ore which have recently been opened in the vicinity of Wurtzboro'. 
Besides galena, or sulphuret of lead, there are crystallized iron and cop- 
per pyrites and the sulphuret of zinc, or blende, and these metalhc mi- 
nerals are contained in a gangue of quartz, which is often in handsome 
crystals. These mines and their products were particularly noticed in 
my last report, and I then expressed some doubts whether they could 
be advantageously wrought, on account of the difficulty of separating 
the copper, zinc and iron from the lead. I have been informed that 
during the last summer large quantities of the ore were raised, and that 
the difficulties which attended the reduction of it have been overcome. 
If this be correct, and if the vein of ore continues of its present width, 
the location of the principal mine on the immediate bank of the Hudson 
and Delaware canal is such as to give it great importance. 
TIOGA COUNTY. 
In this county I have to notice only the occurrence of some sulphur 
springs, and a bed of marl in the town of Spencer, from which lime is 
made by calcination. 
TOMPKINS COUNTY. 
Scarcely more abundantly supplied with minerals than the preceding, 
at least so far as my information extends. Calcareous tufa is found in 
