Geology, &c. of the Connecticut. 217 
a little tinged with red, a quarter of an inch broad. The cen- 
ire is occupied by an amethystine geode of a light purple. 
Weight of the whole agate, twenty-three pounds. 
No. 2. Face seven inches by four—Quter band, one 
fourth - an incly wide, of yellowish red carnelian ; second 
band greyish white chalcedony, one fourth ofan inch. The 
remainder of the space is occupied by a geode of limpid 
quartz. The outer coat of carnelian is broken off from a 
Jarge part of this specimen, leaving bare the whi ish chalce- 
dony, and it has a strong resemblance to the human crani- 
um ; orhilating similar protuberances and concavities. 
No. 3. Face three inches in diameter—outer band of yellow- 
ish red carnelian—second do. chalcedony alittle tinged with 
red, one tenth of an inch—third do. cacholong, one tenth 
of an inch—fourth do. light carnelian, one tenth of an inch. 
The centre is oecupiad by common quartz, not forming a 
geode. . 
No. 4. As it appears at one end: Diameter of the face 
three inches—outer zone three fourths of an inch thick, of 
yellowish green chalcedony—second do. carnelian, one 
fourth of an inch—third do. quartz, siete a greasy aspect 
—fourth do. dark grey translucent chalcedony, a mere ling 
in thickness—fifth do. quartz or milk colored chalcedony, 
one tenth of an inch—sixth do. dark grey chalcedony, a line 
road—seventh do. quartz, one fiftieth of an inch—eight do. 
dark grey chalcedony, a line broad—ninth do. quartz, one 
tenth of an inch—tenth do. chalcedony, a line broad—elev- 
venh do. quartz, one fiftieth of an inch—twelfth do. a line 
of chaleedony—thirteenth do. quartz, one thirtieth of an 
inch—fourteenth do. a line of chalcedony. The centre is 
occupied by limpid quartz. This is a fortification agate, 
and the parallelism of the several bands is most exactly 
preserved, and the angles are perfect. Viewed on a face 
at right angles to that above described, this specimen exhib- 
its a striped-or ribband agate. ij 
No. 5. Made up of an almost countless number of dark- 
er and lighter colored bands of whiteand grey chalcedony 
—two or three ns agates — on the same face. 
Vol. VI.—No. 
