136 Scientific Intelligence. 
looked, viz., what is generally admitted as a fact, that a hybrid may 
readily be fertilized by the pollen of either of its parents; and that if h 
brid plants are occasionally produced in nature, they would ae 
stand a very good chance of being spe inthis way. In su co 
they are said to revert to the type of the species of the im mo 
ting parent; but would they return vexkelly to that ty inheritinggas 
they do a portion of the bloo te cognate species ! where,—as 
not unfrequently occurs—two or more generally well- enacted forms in 
nature are connected by cortite a individuals of intermediate 
character, is it not very supposa at two species may have partially 
blended in thisway? At any rate: hee is a vera causa, or what passe 
as such, which requires to be tak account, as has not yet been 
co 
one, so faras we know. This pra shies operated in the case of culti- 
vated plants, and contributed, along with other causes, to the inextricable 
blending of certain species. But we are not disposed to wn 
it 
plants rarely Sonny ! gor the possibility, and even the proba ility 
of the occurrence mu t be overlooked in a pst ciseuson - j 
the general question of the limitation and permanence species 
However it may be a lending pra hybridization i is far trod 
being a saadenanie, or siti most potent c of the variation of spe- 
cies, since “ the offspring of a hybrid bel never yet been sews to 
ss a character foreign to those of its parents.” And we equally 
agree with our authors that the known facts of the case, “ especially 
warn us not to consider the influence of climate as paramount in deter- 
mining the distribution of species or the prevalence of forms, 
as fficient cause of variati use i 
pate a so sayatie of se continued and ge r develo 
dowpestiction, it is not difficult to imagine. Our aut 
n wil li 
