occasionally double or treble, and even sometimes on the face and body of
horses of all breeds and of all colours. But the stripes appear most
frequently on the various kinds of duns. In foals they are sometimes plainly
seen, and subsequently disappear. The dun-colour and the stripes are strongly
transmitted when a horse thus characterised is crossed with any other; but I
was not able to prove that striped duns are generally produced from the
crossing of two distinct breeds, neither of which are duns, though this does
sometimes occur.

The legs of the ass are often striped, and this may be considered as a
reversion to the wild parent form, the Equus taeniopus of Abyssinia (13/30.
Sclater in 'Proc. Zoolog. Soc.' 1862 page 163.), which is generally thus
striped. In the domestic animal the stripes on the shoulder are occasionally
double, or forked at the extremity, as in certain zebrine species. There is
reason to believe that the foal is more frequently striped on the legs than
the adult animal. As with the horse, I have not acquired any distinct evidence
that the crossing of differently-coloured varieties of the ass brings out the
stripes.

But now let us turn to the result of crossing the horse and ass. Although
mules are not nearly so numerous in England as asses, I have seen a much
greater number with striped legs, and with the stripes far more conspicuous
than in either parent-form. Such mules are generally light-coloured, and might
be called fallow-duns. The shoulder-stripe in one instance was deeply forked
at the extremity, and in another instance was double, though united in the
middle. Mr. Martin gives a figure of a Spanish mule with strong zebra-like
marks on its legs (13/31. 'History of the Horse' page 212.), and remarks that
mules are particularly liable to be thus striped on their legs. In South
America, according to Roulin (13/32. 'Mem. presentes par divers Savans a
l'Acad. Royale' tome 6 1835 page 338.), such stripes are more frequent and