124 Scientific Intelligence. ca 
bring under the common law of organization the ovaries with a free central 
plac enta, whose differences from ordinary ovaries are more apparent than 
real ;” that most probably ia always, in spite of appearances, 
belongs t to the ovarian leaves. et ¢ pleased to find that the exper 
ence of this eminent botanist has brought him into agreement, as regards 
the conception of min with the views of those whom we must regard 
as the soundest workers and writers of the present day, and those om 
whom the hopes of ‘the science rest. He states that if he had the Plan- 
taginee to elaborate anew, he should not hesitate to reduce considerably — 
the number of species, “and pethaps to refer some entire sections to 4 
single specific type.” Perhaps even the greater part of two ea we 
ded uy 
substerile and the other upon truly fertile forms of the same species, of 
set of species: and in another part ofethe genus one wide-spread Ameri- 
can species figures under at least a dozen names. See notes on 
of Pacific Railroad Ezplorations, vol. 4, p. 11 
12: a Bidrag til en Belkrivelle af Gronland ; af J. Rew 
warpt, J.C. Scuépre, O. A. L. Morca, C. F. Lien, J. Laner, TH. Rist 
8vo, pamph., pp. 172. with map. Copenhagen, 1857-—This work con 
‘The iohogicnt potion on ly will a ere. 
copie to see many of ovr familiar species appear ing pation 
names. In this Fier of zoology, the names, particularly 
seem to undergo a periodical change. ulmonates 
r ® species, seven ‘land and four freshwater. Vitrina a 
hardly differs from V. pellucida ; if distinct it is probably identi 
V. limpida, Gould. The various divisions of Heliz, as Conulus, 
a elicogena, are adopted as genera : 
Our Bulla triticea is regarded as the same as the European Cutie 
alba. B. Reinhardi, Miil., is catalogued as “ Cyl. inseulpta, To 
which however is only a synony in of Builla solitaria, Say. Den ; 
Reynoldsi?, Couth., is considered a distinct species frome the European 
re 
doretetni, to which it is generally referred by our naturalists. Four 
of Velutina are mentioned, V. flexilis, lanigera, haliotoides and zonatt 
The classification adopted is singular in some respects * for example 
it is somewhat startling to see Littorina introduced between Veluting 
and Nutica ; while Rissoa and its allies are placed between Watica and 
Cerithium. Natica is divided into four genera, Natica, Lunatia, Gray, 
volumes some of them contain much interesting botanical matter. We 
om ae atvention to them when the remaining voli are published. 
