"The plan is an admirably conceived one, but there is a great difficulty in the way. I observed yesterday that the trail did not lead due south, as it should have done if the Indians were going straight back to their camping ground. I questioned the Gauchos, and they all agree with me on the subject. The trail is too westerly for the camping-grounds of the Pampas Indians; too far to the south for the country of the Flat-faces of the Sierras. I fear that there is a combination of the two tribes, as there was in the attack upon us, and that they went the first day in the direction which would be most advantageous for both; and that, on reaching their halting-place--perhaps twenty or thirty miles from here--they made a division of their booty, and each tribe drew off toward its own hunting-grounds. In this case we have first to find the two trails, then to decide the terrible question, which party have taken Ethel?" Again the Gauchos, upon this being translated to them, expressed their perfect accordance with Mr. Hardy's views, and some surprise at his idea as having been so identical with their own upon the subject. As for the six young men, they were too dismayed at the unexpected difficulties which had started up in their way to give any opinion whatever. This uncertainty was terrible, and all felt that it would have a most depressing effect upon themselves and upon the whole expedition; for how could they tell, after journeying for hundreds of miles, whether every step might not take them further from the object of their search? In this state of depression they remained for some minutes, when Perez the Gaucho said, in his broken English, "Most tribe take most plunder, most cattle, most sheep--take girl." "Well thought of, Perez!" Mr. Hardy exclaimed warmly. "That is the clew for us, sure enough. As you say, the tribe who has furnished most men will, as a matter of course, take a larger share of the booty; and Ethel being the only captive, would naturally go to the strongest tribe." The rest were all delighted at this solution of a difficulty which had before appeared insuperable, and the most lively satisfaction was manifested. The plans for the day were then discussed. Propositions were made that they should divide into two parties, and go one to the right and the other to the left until they arrived at unburned ground, the edge of which they should follow until they met. This scheme was, however, given up, as neither party would have seen the trail inspected by the other and no opinion could therefore be formed as to the respective magnitude of the parties who had passed--a matter requiring the most careful examination and comparison, and an accurate and practiced judgment.