232 Miscellaneous Notices in Mineralogy, Geology, &c. 
be afforded at less than half the expense of that. It will, 
therefore, probably soon come into general use throughout 
our country, whenever such cement is required. 
White has some specimens of the stone which constitutes 
the principal material of his discovery, which he intends 
presenting to you. 
4. Micaceous Iron ore, for oligiste of Hauy. 
We have recently seen this ore in very thin delicate 
_— Virginia, and’ from mine 
tratford, Conn. That inénitshial (pa. 50, Vol. L.) as oc- 
curring near Bellows Falls on the Gansertiolt river, we are 
informed by Professor Hall, is found at Jamaica, in Ver- 
mont, twenty miles directly west of Bellows Falls. Itis a 
remarkably beautiful but very fine grained variety—in its 
structure much resembling the finest grained Dolomite of the 
Alps; the plates however, although thus minute, are dis- 
tinctly visible, but their coherence is so feeble that they 
crumble easily between. se: fingers; the grains “ af- 
fected by the magnet. We have recently receive spe- 
cimen of this fine mineral from Dr. I. A. Allen, of Bratle- 
borough. He states that it is found in Ball Mountain, which 
rises five hundred feet above the water in West river. Dr. 
Allen will supply specimens by exchange or otherwise. 
From the adhering matter, this ore would appear to be im- 
_ bedded i in mica slate. 
= _ Notice ofthe Salem Sienite, Jasper, Amygdaloid, ge. 
ome ee beauty of ‘b polished specimens of this 
induce us to give the follo arti derived 
from the Rev. Elias ees elius “ ar = 
e specimens accompanyin this were taken from a 
.tock which is found in Salem, Mass. near the eastern ex- 
pags lie as pee or Le of land upon ¥ which the 
_ town is situated. 
aed 1g are either pure granite, OF 
that variety 0 of it calles’ sienite, he hornblende of each | is 
diffused in different proportions, from a few epee pense 
rnible, to very considerable quan poate’. esac 
