308 Proceedings of the Boyal Society of Edinburgh. [Sess. 
The wild horse ( Equus przewalskii) now found in Mongolia was 
probably as destitute of stripes in prehistoric times as it is to-day. That 
the wild species from which modern horses of the “ forest” type are 
descended was at least as richly striped as some of the recently exter- 
minated quagga is extremely probable; and it is also probable that the 
wild species which contributed to the making of the Kathiawar, Battak, 
Java, and other Oriental breeds was also more or less striped; but the 
numerous crosses between ponies of the Celtic and the Libyan or Arab 
types afford no support to the view that the slender-limbed horse which 
in prehistoric times ranged from North Africa to England had a richly 
striped coat. 
The dun-coloured crosses between Arabs and native ponies I came across 
in Mexico some years ago, i.e. ponies with a fine head, slender limbs, and the 
hind chestnuts small or absent, had as a rule only a narrow dorsal band. 
On the other hand, dun-coloured crosses of the “ forest ” type — with a long 
body, and short limbs provided with a complete set of callosities — had as a 
rule a broad dorsal band, bars on the legs, and sometimes in addition 
shoulder and face stripes. 
One of my Shetland-Arab crosses was a yellow dun with a fairly broad 
dorsal band and distinct bars on the legs. This cross was the offspring of 
the black Shetland pony from Unst and a bay Arab (Insaf) imported from 
India by Lord Arthur Cecil. But in this case the stripes were inherited 
direct from the sire, a very fleet Arab of the Siwalik or Equus sivalensis 
type, striped like a Kathiawar or Battak pony. 
In the crosses mentioned above, with the hind chestnuts small or absent, 
stripes were conspicuous by their absence; but when the Welsh-hackney- 
Connemara-Shetland-Arab brown stallion with the short) mane was mated 
with a bay-dun mare (the offspring of a brown Barra pony and a yellow- 
dun Iceland mare), a yellow-dun colt was obtained with a narrow dorsal 
band and an indistinct shoulder stripe. This dun colt (fig. 26) in make and 
temperament differs from all the other crosses bred. The mane, instead of 
falling to one side at the fourth month, only began to arch to one side at the 
sixth month, and, judging from the behaviour of the mane in the sire, the 
mane in this colt will probably always be short and clear of the neck. 
Notwithstanding the fact that this colt is a mixture of seven breeds, he is 
extremely well formed, has the tail set-on high, the hind chestnuts absent, 
and only minute vestiges of ergots. Unlike all the other members of the 
Equidae family I have examined, this colt has each front chestnut made up 
of two pieces — a small circular piece about 10 mm. in diameter, and above 
this at a distance of 3 mm. a somewhat smaller triangular piece. Whether 
