I came walking into Leadville with snowshoes under my arm, from two weeks' snowshoeing and camping on the upper slopes of the Rockies. The ends of broken tree limbs had torn numerous right-angled triangles in my clothes, my soft hat was unduly slouchy, and fourteen nights' intimate association with a camp-fire, along with only an infrequent, indifferent contact with water, had made me a sight to behold,--for dogs, anyway. On the outskirts, one snarly cur noticed me and barked; in a few minutes at least a dozen dogs were closely following and making me unwelcome to their haunts. They grew bold with time, numbers, and closer inspection of me. They crowded unpleasantly close. Realizing that if one of them became courageous enough to make a snap at my legs, all might follow his example, I began to sidle out of the middle of the street, intending to leap a fence close by and take refuge in a house. Before I could realize it, they were snapping right and left at me, and howling as they collided with the tail of a snowshoe which I used as a bayonet. We were close to the fence, I trying to find time to turn and leap over; but I was too busy, and, without assistance, it is probable that I should have been badly bitten. Suddenly there was something like a football mix-up at my feet, then followed a yelping of curs, with tucked tails dashing right and left to avoid the ferocious tackles of a shaggy black and white dog. It was Rob, who was delighted to see me, and whom I assured that he was most welcome. He had been seen about Leadville for two or three months, and several persons had bits of information concerning him. All agreed that he had held aloof from other dogs, and that he quietly ignored the friendly greetings of all who made advances. He was not quarrelsome, but had nearly killed a bulldog that had attacked a boy. On one occasion, a braying burro so irritated him that he made a savage attack on the long-eared beast, and sent him pell-mell down the street, braying in a most excited manner. The drivers of ore wagons reported that he occasionally followed them to and from the mines up the mountainside. At one livery-stable he was a frequent caller, and usually came in to have a drink; but no one knew where he ate or slept. One day a little mittened girl had left her sled, to play with him. He had responded in a most friendly manner, and had raced, jumped, circled, and barked; at last he had carried her slowly, proudly on his back. I grew greatly interested in his biography, and wondered what could have shaped his life so strangely. In what kind of a home was his pretty puppyhood spent? Why was he so indifferent to dogs and people, and had he left or lost a master?