588 Annales des Sciences Naturelles. 
rican grasses by E. Poeppig Monograph of the genus Paulia Catalogue of tfoe 
Acotyledonous plants of Southern Africa, intended to include all that have been 
discovered since the publication of Ehrenberg's Flora of that country, part 1st, 
Filices Continuation of the list of plants discovered in the expedition of Ro- 
manzoff, with the addition of those collected by Ehrenberg in Hispaiiiola Con- 
tributions towards the history of Botany in the 1 3th century. Upon the willows 
in the Hortus Hostianus, and the Dendrotheca Bohemica. 
Annales des Sciences Naturelles. Zoologie, MM. AUDOUIN et 
MILNE-EDWARDS. Botanique, MM. AD. BBONGNIART et GUIL- 
LEMIN. Crochard and Co. Paris, Juillet, Aout, 1836. (Con- 
tinued from page 489.) 
1. Zoology. 
THE July Number is occupied with MILNE- EDWARDS' " Recherches anato- 
miques, physiologiques et zoologiques sur les Eschares" a paper which embraces 
a review of every thing which has been written on the family, a detail of the au- 
thor's original inquiries, which are very interesting and complete, and a descrip- 
tion, illustrated with excellent figures, of all the species known to this date. We 
shall have occasion to make ample use of this essay in the " History of British 
Zoophytes" publishing in this Magazine ; but we desire to mention at present, 
that Milne-Edwards disputes the accuracy of the view adopted by us, of the in- 
organic nature of the polype-cells and of the polypidom, contending that these 
are formed much as bone is in the superior animals, and continue to be in con- 
nection with, and under the control of, the living parts. The cell, he says, in 
which the polype retreats as into a shell, is an integral part of the animal, in 
which it conceals itself just as the hedgehog withdraws after a manner into the 
spinous skin of its back. The cell is not a calcareous crust which is moulded on 
the surface of the body of the polype, but a portion of its general tegumentary 
membrane or skin, which by a molecular deposition of earthy matter in the 
meshes of its tissue, hardens as the cartilages of the superior animals harden 
themselves, without ceasing to be the seat of a nutritive movement. The facts 
on which Milne- Edwards grounds this conclusion, we are willing to admit ap- 
pear conclusive ; and we have only to guard against its general applicability, for 
the explanation refers only to the polypidoms of which we have designated " as- 
cidian polypes." 
The analysis of the proceedings of the " Academic des Sciences" embraces a 
continuation of the interminable notices of the Orang-Outang, and its verisimi- 
litudes to man, with which GEOFFROY SAINT- HILAIRE, from sitting to sitting, 
entertains the academy ; LEON DUFOUR'S account of the parasite of the Andrce- 
na aterrima already mentioned by us, p. 295 ; a letter from ALEX. BRONGNIART 
on Ehrenberg's discovery of fossil Entomostraca and other infusory animalcules ; 
a notice of a shower of Frogs which fell in August 1804, near Toulouse ; DOUNE 
on the action of pus upon blood newly drawn from the veins ; and a long and 
curious note upon the Guacharo ( Steatornis Curipensis, Humb. ) of the Cavern 
of Caripe. 
The contents of the number for August are, " Memoire sur Immigration du 
Puceron du Pecker (Aphis persicae,) et sur les characteres et Inn atomic de celte 
