contained anything edible, and they would come close up and watch the men plying the pick with the utmost interest. Mr. Hornaday took us inside, and they all came up in the most friendly manner. One or two of the bucks would put their heads against our legs and try to push us around, but not roughly. Mr. Hornaday told me that he was having great difficulty, exactly as with the mule-deer, in acclimatizing the antelope, especially as the food was so different from what they were accustomed to in their native haunts. The wild fawns are able to run well a few days after they are born. They then accompany the mother everywhere. Sometimes she joins a band of others; more often she stays alone with her fawn, and perhaps one of the young of the previous year, until the rut begins. Of all game the prongbuck seems to me the most excitable during the rut. The males run the does much as do the bucks of the mule and whitetail deer. If there are no does present, I have sometimes watched a buck run to and fro by himself. The first time I saw this I was greatly interested, and could form no idea of what the buck was doing. He was by a creek bed in a slight depression or shallow valley, and was grazing uneasily. After a little while he suddenly started and ran just as hard as he could, off in a straight direction, nearly away from me. I thought that somehow or other he had discovered my presence; but he suddenly wheeled and came back to the original place, still running at his utmost speed. Then he halted, moved about with the white hairs on his rump outspread, and again dashed off at full speed, halted, wheeled, and came back. Two or three times he did this, and let me get very close to him before he discovered me. I was too much interested in what he was doing to desire to shoot him. In September, sometimes not earlier than October, the big bucks begin to gather the does into harems. Each buck is then constantly on the watch to protect his harem from outsiders, and steal another doe if he can get a chance. I have seen a comparatively young buck who had appropriated a doe, hustle her hastily out of the country as soon as he saw another antelope in the neighborhood; while, on the other hand, a big buck, already with a good herd of does, will do his best to appropriate any other that comes in sight. The bucks fight fearlessly but harmlessly among themselves, locking their horns and then pushing as hard as they can.