Intelligence and Miscellanies. 375 
sion of the numerous monkies which inhabit those regions : 
at the end of this cord is a gourd-shaped nest, divided into 
three apartments, the first of which is occupie the male, 
the second by the female, and the third pla ee the young; 
and in the first apartment, where the eeps watch while 
the female is batching, is placed on one ge a little tough 
clay, and on the top of this clay is fixed a glow-worm to af- 
ford s Bite ith light in the night time.” 
lar fact is familiarly known with respect to the hang- 
ing bird of this country. Its nest, formed like a purse, is 
pendulous from the high and slender branches of the trees, 
and is scarcely accessible in any way to invasion. 
15. Chalcedony. 
TO PROFESSOR SILLIMAN. 
New York, January 9th, 1829. 
Dear Sir—Mr. John C. Thomson, of Brooklyn, has hand- 
ed to'me a specimen of chalcedony, to be forwarded to you, 
for your nett aes cabinet. 
t came into his possession a few years since, from the bal- 
last of a pana He does not recollect what port she arrived 
from, and of course cannot assign to the stone a geographic- 
al location. —_ Yours, very respectfully, 
J. M. Ety. 
The above remarkable specimen is a geode, of eee six to 
eight inches in diameter, lined with blue, white, 
chalcedony, in mamillary, and botryoidal, and sialnetivest 
concretions, It is indistinctly agatized, and altogether presents 
a remarkable appearance. It has evidently been animbedded 
specimen, and we should not hesitate to say, that it was 
robably derived from a trap rock, (the most usual repository 
of chalcedony,) were it not that there is no portion of this 
kind of rock adhering to its outside; but, on the contrary, it 
seems to have been enclosed in madrepore coral, with which 
a good deal of the exterior surface is thinly covered. This 
makes us the more regret that its locality is ouknowd, as such 
an association, if not novel, is singular. Perhaps it may 
have proceeded oneainlly from a trap rock near the sea, 
whose decomposition may have allowed it to fall into the 
water, where coralline animals may bave constructed their 
cells around it, and it may have been again detached by de- 
