280 NOTICES OF BOOKS. 
dimensions. But all fleshy roots have not a cortex so characterised. 
In the Radish (red var.), for example, it is thin, and its bundles are 
scarcely apparent ; it remains altogether separated from the central 
system by a cambium, well marked when the vegetation is active, and 
still distinct. Besides the woody bundles do not increase after they 
are surrounded by more recent tissues. In the black variety of 
the ish the woody fibres, disposed in circles sufficiently regular, 
imitate the circular formations of the Beet, but it has a bark of 
which the bundles are perfectly distinct when a fresh root is 
mined ; they correspond to the woody bundles, and all their 
divisions correspond exactly to the divisions of these. The internal 
vascular groups are not accompanied by a cortical element, and 
there is no other increase than that which takes place in the single 
zone of increase placed between the two systems. 
In the variety of the Beet called Bette or Poirée, of which the 
ture which is observ i e hypocotyledonary 
caudex of Beet does not continue at least exactly in its hypocotyle- 
donary stem n in the second year, or by precocious development 
In some points this circle is interrupted 
cortex by an incompletely transparent and badly defined zone en- 
Notices of Sooks. 
Internationales Worterbuch der Pflanzennamen in Lateinischer, Deut- 
scher, Englischer, und Franzisischer Sprache. Von Dr. WILHELM 
Uxnicn. Leipzig: 1872. (Pp. 342.) 
Catalogo Poliglotto delle Piante; compilato dalla Contessa pt SAN 
Groreto. Firenze: 1870. (Pp. 747. 
Deutsche oC Von Hermann Grassmany. Stettin: 1870. 
. 288. 
(Pp. 2 
i 
