Wabi had taken up the map.
"I can't see the slightest possibility of our not finding it," he said. "The directions are as plain as day. We follow the chasm, and somewhere in that chasm we come to a waterfall. A little beyond this the creek that runs through the gorge empties into a larger stream, and we follow this second creek or river until we come to the third fall. The cabin is there, and the gold can not be far away."
He had carried the map to the door again, and Rod joined him.
"There is nothing that gives us an idea of distance on the map," he continued. "How far did you travel down the chasm?"
"Ten miles, at least," replied Rod.
"And you discovered no fall?"
"No."
With a splinter picked up from the floor Wabi measured the distances between the different points on the diagram.
"There is no doubt but what this map was drawn by John Ball," he said after a few moments of silent contemplation. "Everything points to that fact. Notice that all of the writing is in one hand, except the signatures of Langlois and Plante, and you could hardly decipher the letters in those signatures if you did not already know their names from this writing below. Ball wrote a good hand, and from the construction of the agreement over the signatures he was a man of pretty fair education. Don't you think so? Well, he must have drawn this map with some idea of distance in his mind. The second fall is only half as far from the first fall as the third fall is from the second, which seems to me conclusive evidence of this. If he had not had distance in mind he would not have separated the falls in this way on the map."
"Then if we can find the first fall we can figure pretty nearly how far the last fall is from the head of the chasm," said Rod.