24'8 Additional JVotiee 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 Ljnn. On the 

 south-east shore of the island, where the waves of the At- 

 lantic incessantly beat, i observed an unusual number of 

 species of Fucus, Ulva, Spongia, and other genera of 

 zoophytes, unknown to me. The testacea were neither 

 numerous nor interesting. 



It may not be amiss to remark, that in passing from New- 

 Bedford in Massachusetts, to Tiverton in Rhode Island, in 

 a pond, nearly on the line between the states, I found a 

 delicate species of Ho^ioma, that answers well, to the iif. 

 injiata of Elliot ; but is certainly not the H. palustris of 

 Linnaeus. 



Akt. IV. — Additional JVotiee of Argentine, by Professor 

 Dewey. 



To THE Editor, Sib, 



Since the account of the argentine frorti the mine in 

 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. The 

 mineral has been seen by several distinguished mineralo- 

 gists the past summer, who supposed it to be from Europe^ 

 from its resemblance to European specimens. Besides the 

 silvery white, it ocours of a^/eyisA aspect, not appearing to 

 be smoky throughout, though it looks as if it had been 

 slightly smoked. This appearance, however, seems not to 

 be accidental, or induced in blasting the rock, but to belong 

 to the mineral. All the specimens I have examined, are 

 beautifully phosphorescent on a hot iron or coals. The 

 light 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 

 fragments of the laminse evidently tend towards the rhom- 

 boidal tabular form. The laminae often pass into a relative- 

 ly compact mass, so that the laminae cannot be seen. I 

 have lately analyzed another specimen, which seemed to be 



