101 
Charles E. Smith visited the locality May 2d, 1882, obtained good 
flowering specimens, and published his notes in the Torrey Bulletin, 
Vol. ix., 1882. My own visit to the locality was June 26th, 1884, at 
which time the fruit was just perfecting. The Shawangunk Moun- 
tains consist of long, narrow ridges, extending from the Rondout 
Valley, southwesterly into New Jersey, crossing the Delaware River 
a^ the Water Gap, extending thence through Pennsylvania into Vir- 
guiia. By the New York geologists the formation was named the 
Shawangunk Grit, and it is by Dana, in the latest edition of his Man- 
ual of Geology, referred to the Oneida Group, It is almost entirely 
composed of sand-stones and conglomerates, and is remarkable for 
the number of lakes or ponds which are found at frequent intervals 
throughout its extent, and of which L. Mohonk and L. Minnewaska 
are examples. The ridge at L. Minnewaska, and that running south- 
west from it, forming the easterly wall of Palmaghett Glen are of 
nearly pure quartz rock, bearing a scanty growth of scrub pine and 
white birch. The latter ridge extends about two miles, is then 
broken by a deep depression, rising again into a promontory called 
Gertrude's Nose. The height is from 1,500 to r,8oo feet above the 
sea. Following this ridge for nearly two miles beyond the lake, we 
find the Corema in frequent patches along the open sunny spaces on 
the western side of the path along the brow of the ridge, over a 
space of several hundred yards in length. Occasional starved ex- 
amples of Pintis rigida are the only tree growth, and the associated 
tifolia 
Kalmia angustifoli 
The scanty soil in the rock 
crevices and on the rocks is of course derived from the pure quartz 
rock. On the ridge, beyond the depression above mentioned, the 
Corema is said to grow in still greater abundance, but I was not able 
to reach that point. I think we need be under no apprehension of 
the exhaustion of the plant by collectors, but the danger of destruc* 
tion by fire is much greater, 
_ I have thus given the facts connected with the distribution of 
this interesting species. I believe that a consideration of them will 
lead to discoveries of -new localities, and to an extension of its 
known field. It is curious that the first discovery of the plant was 
J^ade at the extreme southern end of its known area, at points where 
U seems not to have been abundant, and from which it has disap- 
peared, 
L 
The Microvegetation of Bank-Notes, by Dr. Jules Schaarschmidt, 
Privatdocent of Cryptogamic Botany and Anatomy of Plants, Assist- 
ant of the Botanic Institutes and Gardens. Royal Hungarian Uni- 
versity, Kolosvdr.— The recent researches of Paul Reinsch in Erlan- 
gen have revealed the occurrence, on the surfaces of the coins of 
^any nations, of different bacteria and two minute algae {Chroococcus' 
^onetarum and Pkurococcus monetarum, P. Reinsch), living in a thin 
' * " " ' " of starch-grains 
the course of long 
circulation. This thin incrustation renders the coins very suitable 
'or this microvegetation, but the same phenomenon is exhibited by 
jncrustation of organic detritus composed especially 
npres, etc., deposited upon their surfaces during tl 
