1888. | BOTANICAL GAZETTE. es 
to be put together so as to form a rectangular rack, on the cross-pieces 
of which are laid very heavy binders’ pasteboards, and on these, in an 
orderly arrangement, the specimens are to be kept. As the inside meas- 
urement is twenty-seven and one-half by eighteen inches specimens of or- 
dinary size may be laid in two ranks. One can keep the left-hand row for 
his personal herbarium, and the right-hand for duplicates; and the size 
-of the whole article may be modified easily to suit one’s needs. To keep 
out the dust curtains may easily be fastened on wire so as to slide readily 
at the front; and permanent curtains may be tastefully fastened to sides 
and back, so that the general appearance will be quite ornamental, and 
the good wife will no more complain of those everlasting roots and 
herbs.—F. D. Ketsry, Helena, Montana, ~ 
mit, the branches monocephalous: radical leaves thickish and firm, 
broadly obovate-spatulate, abruptly acuminate, rather indistinctly callous- 
tipped, } to 3 inch long by } to 4 inch wide, on slender petioles twice 
their length; stem leaves few and small spatulate-lanceolate : heads 
rather small; bracts of the involucre narrow lanceolate, greenish with 
somewhat scarious margins: achenia compressed, hirsute; pappus sim- 
ple.—Belonging to the section containing E. asperuginus Gray, and 0 
_ striking appearance for the genus. The crowded caudices and obovate 
canescent radical leaves much resemble those of some species of Eriogo- 
num, and are unlike those of any Erigeron I know of. Under the micro- 
scope the hairs of the leaves, etc., have a singular app2arance, being com- 
posed of two (or sometimes three) cells, the lower one being generally 
much shorter and of less diameter than the upper. Growing on rocky 
dry hills along Trail Creek, southwestern Montana, at an elevation of 
6,000 feet. Itisa peculiar pleasure to give this plant the name of its 
discoverer, Mr. Frank Tweedy, author of an excellent catalogue of the 
“Flora of Yellowstone Park.”—Ww. M. Cansy, Wilmington, Del. 
EDITORIAL. 
In No one thing do American botanists show more negligence than 
in the historical study of aresearch. It seems to us that the first duty of 
a student is to find out what has been done by others in the line of ob- 
servation selected, and the second to correct and extend those observa- 
tions. One can hardly go amiss in choosing a field of work; but he may 
waste a great deal of valuable time in doing exactly what others have 
- done before, time which should be spent in adding to preceding knowl- 
