On the Geology and Mineralogy of Schoharie, N. Y. 173 
4,5, 6,7, 8, represent the mineral localities in the annexed drawing for 
the purpose of easy reference to Mr. Surparp’s paper, and to show 
the order of discovery. No. 1 and 2, within a few rods of each 
other, are correctly described in page 364 as to the acicular crystals 
of Strontianite, with the omission in No. 2 of thin veins from 4 to 4 
of an inch thick, (supposed to be fibrous Celestine) traversing the 
water-lime, and coating the Strontianite, Heavy Spar and blue 
Calcareous Spar. The whole reposes on a silicious limestone, un- 
derlying greywacke, which itself rests on a compact limerock, con- 
taining favosites. I will observe here, as applicable to most of the 
localities, that there is a confused disposition in the approximating 
strata, which accounts for the different depositions of the mineral. 
The strata below No. 1 only, are fully exposed, and exhibit the 
greywacke and favosite-rock, alternating. No.3 is within a few 
rods of the Court house. Its color is white; and it occurs in veins 
as described in pages 364 and 5. The upper stratum being remoy- 
ed, the loose fragments were found near the surface partially embra- 
ced by the water-lime. It reposes on the favosite-limerock, in which 
considerable masses are imbedded. No. 4 is an interesting variety, 
not noticed in the Journal :—Color blue, gray ; massive; lamellar ; 
often in cavities with tabular crystals. Indeed the mass is chiefly 
an aggregation of crystals, and so slightly cohering, as with difficulty 
to be removed from its bed. On exposure to a dry atmosphere 
they are less liable to separate. Below this, is a layer from one 
quarter, to one inch in thickness of fibrous Celestine (as we supposed.) 
It had the same tendency to separate, but acquired solidity by the 
same treatment; from which I infer that it may be the Heavy Spar 
mentioned on page 367. Here was an excavation of six feet in a 
blue limerock resting on a silicious limerock, the mineral reposing on 
greywacke, near the water-lime. No. 5, about forty feet distant, is 
correctly described on page 365. In reference to the small transpa- 
rent crystals of Quartz disseminated through the Calcareous Spar, they 
occur only, I presume, when the mineral is found between the sili- 
cious limerock and greywacke, as it is here. It must be observed 
that the above localities are all found on acclivities in cultivated fields, 
where the superstratum is often partially or totally removed. The 
line of inclination carries the water-lime above the valley of Foxes 
Creek, two hundred feet to No. 6, which embraces the crystals of 
Strontianite, occurring in cavities or geodes, as described in p. 366. 
These cavities are found in a regular stratum of gray or blue Calca- 
