218 NEW PUBLICATIONS. 
tions, nor did it enter into the plan of the work to give an economie 
- and popular account of the various species. 
The materials from which this Flora has been drawn up are very 
rich; and Mr. Bentham informs us that collections were pouring in 
. ata rapid rate when this first volume was going through the press, 
and promises, at a future time, additions and corrections ; but these 
must be insignificant in comparison with what has been given. We 
should like to have seen mentioned the two important phenomena 
pointed out by Steetz, in Tetratheca and, Platytheca, that in the former. 
the flowers open only on bright days and close at night, whilst in the 
latter genus they are uninfluenced by clouds or the approach of evening. - 
We also observe that he says :—“ The figure of Platytheca galioides, 
Steetz, which Walpers quoted from the * Paradisus Vindobonensis,' is 
not yet published.” ‘The whole first volume of the ‘ Paradisus,’ in- 
cluding letterpress, was completed in 1860; and the figure in ques- 
tion, the only one ever published of that plant, is t. 73. We further miss — 
the name of Billardiera Hambruchiana, a synonym of Sollya linearis. 
We look forward to a second instalment of this valuable work, the 
execution of which could not have fallen into better and abler hands. 
Kryptogamen-Flora von Sachsen, ete.—Cryptogamic Flora of Saxony, 
Upper Lusatia, Thuringia, and Northern Bohemia, with references to 
the adjacent countries. First Part, containing the dlge in the widest 
sense, the Liverworts, and Mosses. By Dr. L. Rabenhorst. With 
more than 200 woodcuts, representing all the genera of Alge. 
Leipzig. 1863. London: Williams and Norgate. 
The district to which this handy little volume applies, is one whose 
boundaries are neither natural nor political. This is of little import- 
ance as regards the Algw, for many of them are cosmopolitan, 00- 
ewring wherever a suitable habitat in water or air, as the case may 
be, is presented ; so that this volume may be considered as a handbook 
of the freshwater Alge of Germany, and, nd eed, almost of Europe. 
Itis different, however, with the Mosses, the distribution of which 
depends upon the latitude and altitude of the district. The highest 
localities are in the Erzgebirge, which in some places rise to a heig 
of 4000 feet ; yet they are not high enough to supply the conditions 
required by the alpine and subalpine species, and these are consequen yy 
