If they were fellow-travellers and twin arrivals, if they did come over the Aleutian bridge together, it is either because there was only one bridge and both had to use it, or else they fell out on the way, and reached here not on speaking terms. The first hypothesis is the one to which I incline: they had to use the same trail because there was only one. Sheep and goat do not seem to me to live on good terms. I should not venture this observation were it based upon my individual experience alone. What my campings have gradually led me to notice is this: you don’t find sheep and goat on the same hill as you find elk and deer in the same wood. Considering that both animals like steep places, like rocks, like very high rocks; and also that their respective habitats coincide in certain regions,--in British Columbia, for instance, and in Washington, and, I think one might fairly add, in Idaho,--I dare by no means make the sweeping assertion that sheep and goat have never been found, or are never to be found, frequenting the same pasture; I don’t know this, and all of us do know that negatives are difficult of proof. But I have camped high in Washington, with goats in profusion all around, and the whole country looking precisely like a sheep country, yet never the sign of a sheep anywhere to be seen. People said, “Plenty of sheep over there,” and they would point to some clearly visible heights. And next, people came from not thirty miles away, having seen and killed sheep. It was the same latitude, the same altitude, the same season, the same everything. What is to be drawn from this? That it was an accidental year, and just happened so for the few weeks that I was there? This is the conclusion that you might draw, as I then did; and you would be wrong, as I then was. For I returned there six years later, and it was still the case, and had been the case meanwhile, saving only that goats and sheep and all wild animals, wherever their chosen abode was, had been growing scarcer and shyer, and were approaching that extinction which we deal to all helpless things that do not minister to our own comfort and survival. During those intervening years I had hunted sheep in a country which for all the world looked as if a goat might come round the corner at any moment. But no goat ever did; and yet, had I ridden down those mountains, and over a space of plains to the westward, and up the very first mountains I should then have met, there would then have been all the goat I wanted, and not (I have been told) a single sheep!