But the duel was between ferocity organised and ferocity deranged, so the former was bound to prevail. It was a struggle of the clan against a number of units which had no permanent cohesion; whose combinations were fitful and occasional. There is no god but strength visible on the checker-board of history. When the mighty is put down from his seat it is not the humble and meek who is exalted, but one whose strength, being of a more subtle order, is perhaps not at first recognised as such--one whose cloak of humility may cover armour of proved temper. The strength of the Bushmen, perfected through long ages of experience, was all-potent against his one-time only adversary, the animal. But when used against man, the intruder who had fought for his existence with other men and learnt in the process the utility of combination, it failed. The Bushman contended under one tremendous disability: he had no tribal organisation,--the family was the independent unit. Piet Noona's nephew, having had the duty of collecting fuel assigned to him, carried a considerable store of bushes to the vicinity of the fire and there heaped them together. With the exception of the "toa," most of the vegetation of the desert is globular in form, and, being usually rooted in more or less soft sand, is easily pulled out. Andries reached over and seized a bush-globe; one that was rather denser and larger than usual. This he flung on the fire. Out of it glided, hissing, a snake-- a horned adder. The reptile was quickly despatched. But upon seeing it Piet Noona sprang into the air to a height of about four feet; then he fled away into the darkness, bounding sideways as he ran and shrieking. He had gone quite mad for the time being. This always happened when he found himself in close proximity to a snake, and the madness invariably manifested itself in the same way. Years ago Piet had been bitten by a puff adder and narrowly escaped with his life. Ever since the sight of a snake at close quarters has incontinently thrown his brain out of gear. How far occasional bouts of brandy-drinking at the Copper Mines has been responsible for this peculiarity, I cannot say. Some months previously I had played--to a great extent unwittingly--a cruel trick on him. I had heard of Piet's being afraid of snakes, but had no idea that his dread of them was so intense. One day when he was saddling Prince I laid a recently-killed snake across the saddle. The creature was practically dead, but was still squirming slightly--as snakes are apt to do for a considerable time after they have been rendered harmless, no matter how badly they may have been mangled.