248 Additional Notice of Argentine. 
yellow and beautiful species of Parmelia, with which I am 
unacquainted : the same, that is so frequent on the pudding- 
stone of Roxbury, and the petrosilex of Lynn. he 
south-east shore of the island, where the waves of the At- 
lantic incessantly beat, | observed.an unusual number of 
species. ucus, Ulva, Spongia, and other genera of 
zoophytes, unknown to me. The testacea were neither 
numerous nor interestin 
delicate species of Hotionia, that answers well, to the H. 
mflata of Elliot; but is certainly not the H. palustris of 
inneeus. 
Arr. 1V.—dditional Notice of Argentine; by Professor 
, Dewey. 
To tue Epiror, Sir, ~ 
‘Since the account of the argentine from the mine 
Southampton was published in Vol. VI. p. 333 of this Jour- 
nal, I have examined several more specimens from the same 
locality. Indeed, this is the only locality of any conse- 
quence, I believe, yet discovered in this country. he 
mineral has been seen by several distinguished mineralo- 
gists the past summer, who supposed it to be from Europe: 
rom its resemblance to European specimens. Besides the 
silvery white, it ocours of a greyish aspect, not appearing to 
be smoky throughout, though it looks as if it had bee? 
slightly smoked. This appearance, however, seems not 0 
be accidental, or induced in blasting the rock, but to belong 
to the mineral. All the specimensT haye examined, are 
beautifully phosphorescent on a hot iron or coals. The 
ight is a bright and strong yellow, slowly increasing for 
some time unless the mineral is reduced to powder. The 
mineral rapidly decrepitates before the blow pipe, and the 
‘agments of the lamine evidently tend towards the rhom- 
dal tabular form. The laminz often pass into a relative 
ly compact mass, so that the laminae cannot be seea- 
have lately analyzed another specimen, which seemed to be 
