ADDRESS. 
103 
small proportion of those which might have been profitably- 
brought forward; the void must be filled by your own infor- 
mation, aided by good sense and experience. Doubtless, by 
these means, you will arrive at the most correct views of duty, 
and will undeviatingly adhere to them. Yet I feel it obliga- 
tory upon me to remind you, that the contest in which you 
are about to engage is arduous, that all the resources at your 
command will be called into requisition, and the position you 
will assume, will depend upon the efficiency with which they 
are wielded; if failure be the result, you must sink into ob- 
scurity; if fortunate, you will be ornaments to your profes- 
sion, and confer honor upon your Jihna Mater. 
ART, XV. — ON DICTAMNUS ALBUS. By Augustine Duhamel, 
Names. — White dittany; Dictame (Fraxinelle) blanc,¥r.; 
Dictamo bianco, Sp. ; Weisser Diptam , Spectivurzel, Ger. ; 
Dittano bianco, It. 
Sexual System. — Decandria. Monogynia. 
Natural Order. — Rutacx, Dec. Diosmeas, R. Br. 
Generic Character. — Calyx deciduous, five-parted; petals 
five, unequal; stamens ten, inclined, and covered at top with 
glandular tubercles; capsule with five carpels internally con- 
nected, compressed, bisperm. 
Specific Character. — This beautiful plant, the only spe- 
cies of its genus, has two varieties, purpurea and alba. Its 
stem is about two feet high, simple, terete, flexous. Its 
leaves are alternate, winged, and impari-pinnate, resembling 
those of the common ash, Fraxius excelsior; hence its 
name of Fraxinella. The folioles are oval, shining and den- 
ticulate. The flowers, white or rose-colored, disposed in a 
straight and terminal raceme. The calyx and peduncle are 
viscous, and of a deep red. The petals open irregularly, and 
