character of N. paniculata is almost completely lost in the hybrid; but if N.
quadrivalvis be crossed with N. vincaeflora, this latter species, which was
before so prepotent, now in its turn almost disappears under the power of N.
quadrivalvis. It is remarkable that the prepotency of one species over another
in transmission is quite independent, as shown by Gartner, of the greater or
less facility with which the one fertilises the other.

With animals, the jackal is prepotent over the dog, as is stated by Flourens,
who made many crosses between these animals; and this was likewise the case
with a hybrid which I once saw between a jackal and a terrier. I cannot doubt,
from the observations of Colin and others, that the ass is prepotent over the
horse; the prepotency in this instance running more strongly through the male
than through the female ass; so that the mule resembles the ass more closely
than does the hinny. (14/16. Flourens 'Longevite Humaine' page 144 on crossed
jackals. With respect to the difference between the mule and the hinny I am
aware that this has generally been attributed to the sire and dam transmitting
their characters differently; but Colin, who has given in his 'Traite Phys.
Comp.' tome 2 pages 537-539, the fullest description which I have met with of
these reciprocal hybrids, is strongly of opinion that the ass preponderates in
both crosses, but in an unequal degree. This is likewise the conclusion of
Flourens, and of Bechstein in his 'Naturgeschichte Deutschlands' b. 1 s. 294.
The tail of the hinny is much more like that of the horse than is the tail of
the mule, and this is generally accounted for by the males of both species
transmitting with greater power this part of their structure; but a compound
hybrid which I saw in the Zoological Gardens, from a mare by a hybrid ass-
zebra, closely resembled its mother in its tail.) The male pheasant, judging
from Mr. Hewitt's descriptions (14/17. Mr. Hewitt who has had such great
experience in raising these hybrids says ('Poultry Book' by Mr. Tegetmeier
1866 pages 165-167) that in all, the head was destitute of wattles, comb, and
ear-lappets; and all closely resembled the pheasant in the shape of the tail