I am aware that Colonel Hamilton Smith, who has written on this subject, believes that the several breeds of the horse are descended from several aboriginal species, one of which, the dun, was striped; and that the above-described appearances are all due to ancient crosses with the dun stock. But this view may be safely rejected, for it is highly improbable that the heavy Belgian carthorse, Welsh ponies, Norwegian cobs, the lanky Kattywar race, etc. , inhabiting the most distant parts of the world, should have all have been crossed with one supposed aboriginal stock.