BOTANICAL SOCIETY OF LONDON. 
69 
Denkalaar, gardener to the University ot Gand, offers a 
solution of a doubly interesting question : First, to decide 
whether the produce of the Hybrid will be fruitful, and 
Secondly, to show, in such case, towards which of the two 
types, maternal or paternal, it will have a tendency to return. 
We know, indeed, that the tendency to become like the seeds 
of the maternal type is, in general the most frequent ; al- 
though, on the other hand, one may, by repeated artificial 
fecundations, bring back again certain Hybrids indifferently 
to either. 
“ 3rdly. That I have attested the same kinds of H}^brida- 
tion between two ferns of our own country : the Asplenium- 
Ruta-muraria, and the Asplenium Germanicum^ running into 
each other in the year IS35, upon the walls of the cemetery 
at Scharbeck. 
“The Hybrid produce tending to the Asplenium-ruta- 
muraria , by the two inferior pairs of winged leaflets, and to 
the Asplenium Germanicum by the form of the pinnules of 
those leaflets, which, instead of being (as in the A. ruta- 
muraria) oblong rhomboidal, obtuse, and irregularly denti- 
culated, were, on the contrary, contracted at their base, and 
simply dentated at the summit. 
“ These remarks are given to support those of Mr. Martens, 
which I had intended to lay before the Academy in a more 
detailed form, if I had not been preceded by our honourable 
colleague.” 
The reading of this communication confirming the vieM S 
entertained by M. Martens, led to a long and interesting dis- 
cussion, in which several Members expressed their doubts as 
to the Hybridity above mentioned. 
JUNE 1st. 
J. E. Gray, Esq., F. R.S., President, in the Chair. 
The usual business of the evening having been dismissed, 
the Secretary proceeded to read a letter of thanks from the 
British Museum, for the specimen of the leaf of Victoria Re- 
gina which the Council thought advisable to deposit in the 
Botanical department of that institution, and which had 
been transmitted to the Society by Mr. R. Schomburgk, now 
travelling in British Guiana. 
