98 TRANSACTIONS OF THE [Nov. 20, 
“ Khodonite, both massive and in beautiful large crystals : 
“ Zircon, a specimen in the cabinet of Mr. Thos. Long. of 
Ogdensburgh, + inch across the prism face, and 14 inches long ; 
“ Zincite; massive tephroite; tephrowillemite in fine crystals ; 
sussexite, rarely found; desaullesite ; niccolite, in crystals occa- 
sionally ; rammelsbergite, in crystals; rhodocrosite; fluorite ; 
asbestos. 
“The most abundant minerals are, however, massive rhodonite 
and polyadelphite. It is in immediate connection with this 
latter mineral that the recently observed mineral is found. It 
occurs in thick plates and scales with biotite, into which this 
passes or from which it is apparently derived by alteration. 
‘““The writer has been at the mines frequently during the past 
five years, and this is the first time that this mineral has been 
known to be observed, and it can thus probably be safely re- 
corded as a new mineral from this locality.” (End of Nason’s 
Notes.) 
The examination, as far as it has proceeded, shows conclus- 
ively that it is not clintonite. It contains considerable man- 
ganese and is perhaps the alteration of biotite known as mangan- 
ophyllite. As far as I know, this variety has not been noted 
from this country. It may be an altogether new species, for it 
does not correspond exactly with manganophyllite. I hope to 
make a full report in this matter a little later. (A. H. Chester.) 
SECTION OF BroLoey. 
Dr. N. L. Brirron remarked on species of the genera Dra- 
cocephalum, L., and Cedronella, Moench. 
The following papers were read : 
“On the Scope of Modern Physiology,” by Dr. F. 8. Lee. 
ADDITIONAL NOTES ON RECENTLY DISCOVERED 
DEPOSITS OF DIATOMACEOUS EARTH 
IN THE ADIRONDACKS. 
By Cas. F. Cox. 
Since the presentation of my previous paper upon this subject 
I have caused an exploration to be made of the ponds and lakes 
in Township 48, Herkimer county, N. Y., by Mr. D. C. Wood, 
