Now, a collie is like no other animal on earth. He is, at worst, more wolf than dog. And, at best, he has more of the wolf's lightning-swift instinct than has any other breed of canine. For which reason Lad was not, then and there, smashed, flat and dead, under the fore-wheels of a three-ton truck. Even as the tires grazed his fur, Lad gathered himself compactly together, his feet well under him, and sprang far to one side. The lumbering truck missed him by less than six inches. But it missed him. His leap brought him scramblingly down on all fours, out of the truck's way, but on the wrong side of the thoroughfare. It brought him under the very fender of a touring car that was going at a good pace in the opposite direction. And again, a leap that was inspired by quick instinct alone, lifted the dog free of this newest death-menace. He halted and stared piteously around in search of his deities. But in that glare and swelter of traffic, a trained human eye could not have recognized any particular car. Moreover, the Mistress and Master were a full half-block away, down the less crowded side street, and were making up for lost time by putting on all the speed they dared, before turning into the next westward traffic-artery. They did not look back, for there was a car directly in front of them, whose driver seemed uncertain as to his wheel control, and the Master was manoeuvering to pass it in safety. Not until they had reached the lower end of Riverside Drive, nearly a mile to the north, did either the Master or Mistress turn around for a word with the dog they loved. Meantime, Lad was standing, irresolute and panting, in the middle of Columbus Circle. Cars of a million types, from flivver to trolley, seemed to be whizzing directly at him from every direction at once. A bound, a dodge, or a deft shrinking back would carry him out of one such peril--barely out of it--when another, or fifty others, beset him. And, all the time, even while he was trying to duck out of danger, his frightened eyes and his pulsing nostrils sought the Mistress and the Master. His eyes, in that mixture of flare and dusk, told him nothing except that a host of motors were likely to kill him. But his nose told him what it had not been able to tell him since morning--namely, that, through the reek of gasoline and horseflesh and countless human scents, there was a nearness of fields and woods and water. And, toward that blessed mingling of familiar odors he dodged his threatened way.