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considerable quantities near the village of Ithaca, investing moss, &c. 
as in many other parts of the State. There are also beds of gypsum 
in the calciferous slate, but I have no means of know^ing their value. 
To these may be added two or three sulphur springs. 
ULSTER COUNTY. 
Although the mineral productions of this county are not numerous, a 
few of them are of great importance. This is particularly the case 
vi^ith the w^ater limestone, of v^hich immense deposits are found along 
the Rondout and the Hudson and Delaware canal. Some account of 
the operations in this article was given in my last annual report, and I 
now add with regret, that the discontinuance of many of our public 
works has seriously affected this important branch of industry. 
In the vicinity of the High falls there is a soft argillaceous limestone, 
which, as it may be easily reduced to powder, has been proposed as a 
fertilizing agent. Its composition is similar to that of the water lime- 
stone, with which it is no doubt associated. An analysis gave the fol- 
lowing results : 
Carbonate of lime, 29.45 
Carbonate of magnesia, 24.30 
Silica and alumina, 42. 50 
Oxide of iron, 3. 75 
This limestone often contains cubical and dodecahedral crystals of 
iron pyrites, similar to those found in the county of Schoharie. 
Of marl, there are several localities in Ulster,* while the other more 
common forms of carbonate of lime are also abundant ; as for example 
calcareous spar and stalactites, the latter of which has been found in a 
cavern fourteen miles south-west from Esopus. It deserves also to be 
stated, that fossil bones have been obtained from the marl beds of this 
county. 
Lead ore has long been known to occur in the Shawangunk moun- 
tains, within the limits of Ulster, and mining operations have recently 
been commenced near the red bridge, which forms the boundary be- 
* A specimen of marl from Judge Hasbrouk's farm, near Kingston, having a greyish 
,eolour and containing shells, is composed in 100 parts, of 
Silica and alumina, 3 . 25 
Vegetable matter, 4.00 
Carbonate of lime, 92.75 
