See page in:
1859
1860
1861
1866
1869
1872

Compare with:
1860
1861
1866
1869
1872

resemblance 1859 1860 1861
degrees and kinds of resemblance 1866 1869 1872

With 1859 1860 1861 1866 1869
So I believe it to be with varieties of plants; and with 1872

parent-form, 1859 1860 1866 1869 1872
parent form, by 1861

more resemble 1859 1860 1861 1866 1869
resemble more closely 1872

crossed with a third species, the hybrids are widely different from each other;
whereas,
whereas
if two very distinct varieties of one species are crossed with another species, the hybrids do not differ much. But this conclusion, as far as I can make out, is founded on a single experiment; and seems directly opposed to the results of several experiments made by Kölreuter.
Such
These
alone are the unimportant
differences
differences,
which Gärtner is able to point
out
out,
between hybrid and mongrel plants. On the other hand, the resemblance in mongrels and in hybrids to their respective parents, more especially in hybrids produced from nearly related species,
follow
follows
according to Gärtner the same laws. When two species are crossed, one has sometimes a prepotent power of impressing its likeness on the
hybrid.
hybrid;
and
and
so
so
I
I
believe
believe
it
it
to
to
be
be
with
with
varieties
varieties
of
of
plants.
plants.
With animals one variety certainly often has this prepotent power over another variety. Hybrid plants produced from a reciprocal cross, generally resemble each other closely; and so it is with
mongrel
mongrels
plants from
from
a reciprocal cross. Both hybrids and mongrels can be reduced to either pure parent-form,
by
by
repeated crosses in successive generations with either parent.
These several remarks are apparently applicable to animals; but the subject is here
much
excessively
complicated, partly owing to the existence of secondary sexual characters; but more especially owing to prepotency in transmitting likeness running more strongly in one sex than in the other, both when one species is crossed with another, and when one variety is crossed with
an- other
another
variety. For instance, I think those authors are right, who maintain that the ass has a prepotent power over the horse, so that both the mule and the hinny more resemble the ass than the horse; but that the prepotency runs more strongly in the
male
male-ass
than in