108 STORRS AGRICULTURAL EXPERIMENT STATION. 
circumstances, and in undisturbed cultures there is usually no 
second growth from the spores or from the old mycelium, 
although the contrary has been claimed for this fungus by 
a recent writer (Mazé, 10). <A cheese inoculated with this 
mold will become covered with pure white, cottony mycelium 
in about a week. ‘The color will then begin to show the grey- 
green shade characteristic of the species, which spreads until 
at the end of the second week the entire surface, if left undis- 
turbed, will be colored. 
Persistent search has failed to find a single colony in America 
whose presence can be attributed to anything but Camembert 
cheese, imported from Europe. The mold may then be re- 
garded as a typical dairy férm which is not well adapted to 
cosmopolitan conditions, and to the struggle for existence on 
all sorts of media. In fact in the course of laboratory practice 
involving thousands of cultures, even in the laboratories of this 
Station, this mold rarely appears as a contamination, although 
it has been cultivated in quantity and used in the inoculation 
of large numbers of cheese in the same building with the bac- 
teriological laboratory. Moreover, the spores are easily killed 
by heat, and retain their vitality for only a few weeks in 
ordinary cultures allowed to dry in the air at room temperature. 
The following technical characterization may be offered, based 
upon studies made upon the sugar gelatine and potato agar 
described in this paper, after the plan outlined in my recent 
paper in the Journal of Mycology. 
Penicillium Camemberti (nomen novum ).*—Colonies effused , 
white (sometimes yellowish white) slowly changing to grey- 
green (glaucous); surface of colony floccose, of loosely felted 
hyphae about 5 in diameter, reverse of colony yellowish 
white; conidiophores 300-800 in length, 3-4 in diameter, 
septate, cells thin-walled often collapsing in age, arising as 
branches of aerial hyphae; fructification sometimes 175m in 
length but usually much less, consisting commonly of one main 
branch and one lateral sparingly branched to produce rather 

* In offering a new specific name for this mold the author is aware that the name 
P. album Epstein is accepted for this mold by Mazé and others; also that Lindau has 
substituted for P. album Epstein, P. Epsteini Lindau on examination of the literature 
alone. ‘he previous use of the name P. album by Preuss for a fungus now unknown 
invalidates that name as used by Epstein. Careful study of Epstein’s article and of 
the diagnosis of P. Epsteini, drawn by Lindau from Epstein’s article, shows that this 
description offered would be incorrect if applied to this fungus. This opinion has 
been discussed with and concurred in by Dr. C. Wehmer. 

