1893.] Briefer Articles. 109 
of well-developed buds in the upper axils of the leaves in the buds 
containing flower-clusters. These start at once in the spring and 
while the flower-cluster. is still young become rapidly growing branches, 
While the leafy branches without flower-clusters have merely latent 
buds in their axils. When the flower-cluster drops off a new branch 
Is ready to carry on the old one, which has been stopped in its growth. 
It 'San interesting speculation as to the reason of this growth of the 
axillary bud or pair of buds. Perhaps it is able to take place because 
the development of the flower-cluster ‘requires less nourishment.— 
Jae H. Newent, Cambridze, Mass. 
Francis Wolle——We regret to announce the death of the Rev. 
Francis Wolle, which took place at his home in Bethlehem, Pa., on 
et toth, after long and paiefnl illness. Mr. Wolle was born in 
nis Jacobsburg, Pa. From 1839 onward his life was devoted to 
e educational work of the Moravian church, with the exception of a 
cee agp pursuits. For twenty years, from 1861 to 
and for five a — sore Ladies Seminary at Bethlehem, 
assistant to hie ie ' served in practically the same capacity as 
Pelled his retire er who was principal. In 1881 infirmity com- 
r. Wolle’s ; a from these active duties. 
Up the study erie; in botany dates from about 1870. He first took 
from essrs, eg gat im which he received much assistance 
Wolle engaged j tt and Eugene Rau, of Bethlehem. Later Mr. 
=eec' In the study of mosses in connection with Mr. Eugene 
With which his i ig drawn to the fresh water algae, in connection 
es is ns be best known, on obtaining the beauti- 
Tnithsonian Institys. Cod on fresh water algae, published by the 
Dr. W Itution, 
ood and Prof. 
390 figy 
of illustration, WETS? colored plates. In 1891 appeared the 
. f which §) = “Diatomaceae of the United States,” 
~~ “Desmide » 2 plates, and in 1892 arevised edition of the 
¥ be, will ren. perfect as such pioneer labor must 
ow "hah m pee 2 
; When it iS remem Si. aS 8 monument of untiring industry; and 
: . at Mr. Wolle was his own artist, the amount 
