44 ‘ Notices of Botanical Literature. 
neh, in parallel columns. The plates were executed at Mu-— 
ich, in lithography, of the very highest excellence. In this 
connection, I may call your attention to a highly interesting me-_ 
moir by Prof. Adolphe Brongnuiart, in Ann. Sci. Nat., for May, 
1849, but not published before nearly the close of that year, en- 
titled, Exposition Chronologique des Périodes de Végétation, et 
des Flores diverses qui se sont succedé a la surface de la Terre. 
If some one would take the trouble to make a translation, it 
would be interesting and useful to reproduce it in your Journal. 
From the vast predominance in the most ancient formations of 
Acrogenous Cryptogams (Ferns and Lycopodiacee), succeeded at 
length by Gymnospermous Dicotyledons (Cycadee and Conif- 
ere), and from the first appearance in later times, and soon the 
predominance of Angiospermous Dicotyledons and Monocotyle- 
dons, M. Brongniart. is led to arrange the floras of the ancient 
world, considered as to their succession in time, under three great 
dynasties, viz., ' 
(L.) The Reign of Acrogens. 
1, Carboniferous Period. 
2. Permian Period. 
(2.) The Reign of Gymnosperms. 
| 3. Vosgien Period. 
A, Jurassic Period. 
art 
turn his attention again to the Flora Brasiliensis, which is noW 
likely to go on, although [I am not aware that a new part is actu- 
ally in press. ; 
The Genera Flore Germanice Iconibus Iilustrata, begun by © 
Th. F. L. Nees von Esenbeck, and after his death transferred t0 
Prof. Spenser of Fribarg in Briesgau, and after his death con- — 
tinued by Endlicher and Dr. Putterlich of Vienna, since the death 
of both of the latter botanists, has been taken up by Prof. Bischoff . 
of Heidelberg, who is as accomplished a draughtsman as a bota- _ 
nist. I have seen some of his illustrations of Umbellifere, which — 
will more than sustain the character of this work, but Iam not — 
sure whether any new fasciculi have yet been issued. ae 
The recent mortality among the German botanists is very fe _ 
markable. Besides those already mentioned, are the following. — 
The veteran Prof. Link, died at Berlin on the 14th of Januar 
last, at the age of 85, active almost to the last, and surviving — 
