22 AMERICAN FERN JOURNAL 
he gets; from forty to sixty pounds is recommended. Stiff, thick, 
intractable plants take more than thin and delicate ones, and many 
plants pressed at once more than a few. Some of the best fern 
specimens I ever saw were made by piling stone paving blocks 
results; my own pet press has coarse-threaded wooden screws, 
taken from some old carpenter’s clamps. The usual size for driers 
is about 12 by 17 or 18 inches—a little larger than the standard 
herbarium sheet. The first change of driers should be made not 
longer than 24 hours after the specimens are put in press. Slats 
are better than solid boards for the top and bottom of the press 
because they permit a more rapid evaporation of moisture. The 
species mentioned, or any other of our native ferns, can be pres 
Stokes Co., New York, which gives rather full directions for press- 
/ ing plants. 
SAS Y- 
Prince Roland Bonaparte is constantly receiving, 
his great fern herbarium, numbered collections from 
various sources and from many different regions, some 
specimens of which are, inevitably, either wrongly 
identified or sent out without names. He has under- 
taken to determine these misnamed or nameless spe 
mens, describing new species and varieties where nec- 
essary, and to publish the results for the benefit of 
others who may have sets of the same collections, ™ 
a series of brochures which he calls “Notes Ptéridolo- 
giques.”* Four. fascicles have already been issued, 
comprising nearly 700 pages and dealing with species 
Se Bonaparte. Notes Ptsridologiques. Paris. Fascicule : 
III, pp. 27. Dee 
Prince 
Pp. 230, July 14, 1915. i, pp. 219, Dec. 2, 1915. 
1916. IV, Pp. 123, May 19, 1917. 
