84 
[Assembly 
A notice of several interesting minerals obtained in this county, must 
now be reserved for the final report, as I have not yet had time to com- 
plete their chemical examination.* 
ORLEANS COUNTY. 
The mineralogy of this county, so far at least as it is at present 
knovv^n, is exceedingly simple. Several brine springs have been found 
in various parts of it, and some of them were formerly used to a limited 
extent in the manufacture of salt. But they are now entirely neglected. 
There are also one or two sulphur springs, and some deposits of bog 
iron ore ; but there is only one locality of the latter, where the mineral 
is in sufficient quantity, to be of any use in the manufacture of iron. 
OSWEGO COUNTY. 
Still more barren of minerals, than the last ; for we have only to 
notice some unimportant brine springs, and a locality of bog iron ore, 
which is of trifling importance. 
OTSEGO COUNTY. 
This county contains abundance of good marble, and several sulphur 
springs, one or two of which are in considerable repute. Calcareous 
tufa is found near them, and also selenite and gypsum in small quan- 
tities. These together with a weak brine spring are, I believe, the 
only mineral productions, thus far credited to this county. I should 
add, however, that a mass of native iron, probably of meteoric origin, 
was some years since found near Burlington. 
PUTNAM COUNTY. 
As might be inferred from the geological characters of this county, 
its mineral productions are of much interest. Pursuing the order which 
has been heretofore adopted, it may be observed, that in iron ore, 
this county is peculiarly rich. It contains several beds, or veins of the 
magnetic kind, which yields ore of the best quality, and in the greatest 
abundance. These deposites have been minutely described, by Mr. 
Mather, in his report of last year. 
* Of several specimens of marl which I have received from this county, I have 
only had time to analyze one, and that is from the lands of Gen. Wickham. Its com- 
position in 100 grains is as follows : 
Insoluble matters, (silica and alumina) 6.25 
Carbonate of lime, , . . . , 93 . 75 
