"There's your enemy," he said to Bobby who had climbed up beside him, and pointed to the river. "The river bank, I am sure, must edge upon a tilted shale formation which dips just below this basin. Probably at all times some of the water from the river seeps down between two sand-separated layers of this formation to find its outlet in the marsh, and it is this water which, through a geological freak, has supplied that swamp for ages. In the spring, however, and in extraordinary flood times, it probably finds a higher and looser stratum, and rushes down here with all the force of a hydraulic stream. This spring it took it a long time to wet thoroughly all our made ground from the bottom upward. The frost, sinking deeper in this loose, wet soil than elsewhere, held it back, too, for a time, but as soon as this was thoroughly out of the ground the river overflow came up like a geyser. "Mr. Burnit, your Applerod Addition is ruined, and it can never be saved, unless by some extraordinary means. Nature picked out this spot, centuries and centuries ago, for a swamp, and she's going to have one here in spite of all that we can do. In five years this basin won't be a thing but black water and weeds, with only that club-house as a decaying monument to your enterprise." Bobby controlled himself with an effort. His face was drawn and white; but part of that was from the anxiety of the past two days, and he took the blow stiff and erect, as a good soldier stands up to be disciplined. His eye roved over the work in which he had taken such pride, and already he could see in fancy the dank weeds growing up, and the croaking frogs diving into the oily surface, and the clouds of mosquitoes hovering over it again. Over the top of his retaining wall still poured the foul water which was to leaven all this, and he gazed upon it with a sharp intake of the breath. "And to think that Silas Trimmer must have known all this, and led me to waste a fortune just so that he could reap the benefit of my advertising for his own vulture advantage!" That, at first, was the part which hurt more than the overthrow of his plans, more than the loss of his money, more than the failure of his fight to carry out his father's wishes for his success: that any one could play the game so unfairly, that there could be in all the world people so detestable, so unprincipled, so _unsportsmanlike_! Slowly the vanquished pair descended the hill to where the automobile stood upon the solid, level sward, but before they climbed in Bobby shook hands with his engineer. "Don't blame yourself too much, old man," he said. "It wasn't a condition that you could foresee, and I'm mighty sorry if it hurts your reputation." "It ought to!" exclaimed Platt with deep self-revilement. "I should have investigated. I should not have taken anything for granted. I ought to have enough money so that you could sue me for damages and recover all you lost."