rs 
272 BOTANICAL GAZETTE. | November, 
pilze,” certainly by far the finest exsiccate of this group ever distributed. 
A partial translation of his article was given by W. R. Gerard, in the Bull. 
Torrey Bot. Club for March and May, 1881. 
The writer has succeeded in simplifying Herpell’s process without 
much sacrifice of efficiency, and offers the following abstract of the 
method, as modified: The whole fungus is split vertically with a sharp 
knife into halves. From one half a thin slice is taken by a careful eut ae 
parallel to the first,and laid aside as No.1. From the other half the stipe 2 
is cut off close to the pileus,and gills and flesh are removed as completely sf 
possible f both pi and stipe, so as to leave only their outer surfaces 
intact. These shells of pileus and stipe are Nos. 2 and 3, respectively. 
The three preparations thus made are now laid, right side up, on a pre 
pared adhesive paper, covered with unsized muslin, and placed between 
driers of heavy felt paper, under a moderate pressure. 
Great care should be taken not to destroy any delicate portions of veil : 
-or volva which may be present in making the various preparations, ce 
which should show (1} attachment of gills and nature of interior of = 
‘stipe, (2) nature of top of pileus, (3) nature of surface of stipe and pres-, 
ence or absence and nature of veil and volva. Either of the adhesive Pr 
pers in use for strapping plants to the herbarium sheet serves excellently 
for this purpose, viz.: Dennison’s gummed paper or photographers’ albu- 
men paper. The latter, perhaps, gives rather better results. Driers 
‘should be frequentl y changed, and pressure should be secured by weights, 
not by screws. When the specimens are partly dried the muslin may 
be carefully rem wed; and when wholly dried they will be found to be e 
firmly attached to the paper, their adhesion to which has prevented the 
shrinking so prominent in the common method of drying these fung!. 
The paper is now to be cut away with knife or scissors close to the edge. 
of each preparation, which is then ready for mounting. No. 1is first glued 
to the mounting paper; then No. 3; lastly No. 2 is put on, overlapping No. 
3in such a way that the two together give a profile view of the living 
fungus, ; 
Spore preparations made in the usual way on adhesive paper are a 
manent, since almost any pileus has sufficient moisure to soften the gum 
or albumen, which dries when t!:e*pileus is removed and holds the spores” 
fast. This can then be mounted with the other preparation to complete 
the specimen. is 
Many little points will suggest themselves in carrying the process 
through, but the above is an outline of its essential features. It does not 
wholly obviate the necessity for colored drawings of the fresh fungus, but ; 
renders them less indispensable and makes the preparation alone ye : 
useful. The time required to make a good specimen is, of course, eo a 
longer than is needed to dry and press an agaric in the old way, ae 
less than that required for.a good specimen of a flowering plant, and 
