But all at once, at a distance of some five and thirty yards, he saw a keeper, erect and motionless, barring his way. He turned slightly to the left and there perceived another keeper, who also seemed to be awaiting him. And there were more and more of them; at every fifty paces or so stood a fresh one, the whole forming a _cordon_, the meshes as it were of a huge net. The worst was that he must have been perceived, for a light cry, like the clear call of an owl, rang out, and was repeated farther and farther off. The hunters were at last on the right scent, prudence had become superfluous, and it was only by flight that the quarry might now hope to escape. Salvat understood this so well that he suddenly began to run, leaping over all obstacles and darting between the trees, careless whether he were seen or heard. A few bounds carried him across the Avenue de St. Cloud into the plantations stretching to the Allee de la Reine Marguerite. There the undergrowth was very dense; in the whole Bois there are no more closely set thickets. In summer they become one vast entanglement of verdure, amidst which, had it been the leafy season, Salvat might well have managed to secrete himself. For a moment he did find himself alone, and thereupon he halted to listen. He could neither see nor hear the keepers now. Had they lost his track, then? Profound quietude reigned under the fresh young foliage. But the light, owlish cry arose once more, branches cracked, and he resumed his wild flight, hurrying straight before him. Unluckily he found the Allee de la Reine Marguerite guarded by policemen, so that he could not cross over, but had to skirt it without quitting the thickets. And now his back was turned towards Boulogne; he was retracing his steps towards Paris. However, a last idea came to his bewildered mind: it was to run on in this wise as far as the shady spots around Madrid, and then, by stealing from copse to copse, attempt to reach the Seine. To proceed thither across the bare expanse of the race-course and training ground was not for a moment to be thought of.