NEW PUBLICATION'S. 313 
May I request Dr. Fox to come forward, and to show where Professors 
Robin and Rabenhorst are wrong, and on what grounds he declares Pleuro- 
coccus to be " defunct " ? 
But for Heaven's sake, no fifth opinion ! 
3, Finsbury Square ; loth September, 1867. H. Beigel, M.T). 
NEW PUBLICATIONS. 
Genera Plant arum, ad Exemplaria imprimis in Ilerbariis Kexoensibim 
servata definila. Auctoribus G. Bentham et J. I). Hooker. Vol. I. : 
sisters Dicotyledonum Polypetalarum Ordines LXXXLU. (Banun- 
culaceas— Cornaceas). Londini : L. Eeeve et Co.; Williams et 
Norgate. 1862-1867. 
Every systematic botanist will rejoice at the completion of the first 
volume of Bentham and Hooker's great work on the genera of plants. 
The third part having just appeared, containing a conspectus of the 
whole Polypetalous .Orders, and characters to different genera belonging 
to Melastomacea, Lythrariea, Onagrariea, Samydacea (including llo- 
malinece), Loasece, Turueracea, Passifiorem (including MalesheHiacew 
and Papaijacea), Cncnrbitacem (including Nandirhobe<e), Begoniacece, 
- T T T f _ . _ ^_ A 
Moll 
The 
Umbel lifer at, Araliacere (including Helwigiacea) 
genera Euptelia and Trocliodendro» , which were first indicated in this 
Journal as constituting a distinct group of plants, are referred in the 
Supplement as a tribe to Magnoliacea, whilst Fockyiiacea are referred 
to the neighbourhood of PolygalecB. . 
It will be seen that five years have elapsed since the first part of tins 
volume came out ; and if the publication does not proceed at a more 
rapid rate, it will take at least ten years more before the whole work 
can be completed. The task still to be accomplished is a gigantic 
one, and will no doubt be performed as satisfactorily as that already 
done. We wish the illustrious authors health and sufficient leisure for 
it. They 
service 
science; and though 
their definitions of genera and arrangements may in some instances 
be objected to, their ' Genera Plautarum ' will for many years to come 
be what Endlicher's has been up to this time, and will be untiht shall 
have been quite superseded by the work now under notice. 
