No. 50.] 
55 
Alum — In the form of an efflorescence. 
Iron Pyrites — Of this there are several localities in various parts of 
the county. To these I may add 
Carbonate of Soda — Found in needle-form crystals on damp walls, 
in various parts of the city. 
ALLEGANY COUNTY. 
Very few minerals have hitherto been found in this county, and from 
its geological character it is not probable that the list will be much en- 
larged. It contains, however, several beds of bog iron ore ; and the 
petroleum, or oil spring, situated in the town of Cuba, is an object of 
considerable interest. It has been described by Prof. Silliman,* and 
more recently by Mr. Vanuxem.f According to the latter gentleman, 
lamellar hydrate of manganese associated with calcareous tufa, is found 
near Angelica. These are the only minerals that, have to my know- 
ledge, been credited to this county. 
BROOME COUNTY. 
The mineralogy of this county is still more limited than that of the 
precedingo Several sulphur springs and one or two brine springs, 
make up the entire catalogue. A specimen of fine salt from the bor- 
ing at the Triangle, furnished me by Mr. Vanuxem, is nearly free from 
foreign matters, and is, indeed, one of the purest and best that I have 
ever analyzed. I regret that I am unable to give the strength of the 
brine from which it was obtained. 
CATTARAUGUS COUNTY. 
I have not yet visited this county, nor do I know any thing of its 
mineral resources. 
CAYUGA COUNTY. 
The brine springs of this county were formerly worked to a conside- 
rable extent, and in importance they are second only to those of Onon- 
daga. My second annual report contains a detailed account of these 
springs, and some suggestions in regard to the measures which should 
be pursued for reviving the manufacture of salt at Montezuma. In ad- 
dition to these, there are here several important sulphur springs ; and 
a chalybeate spring occurs in the town of Sennet. Beds of gypsum 
* SiUiman's Journal, XIII. 97. f N. Y. Geological Reports, 1837. 
