"I hope you are not spoiled by the water, Glen Matherson," laughed the engineer, as he took the wet roll from the boy's hand. "You have done splendidly, and I am sincerely grateful to you for rescuing my plans, which are indeed of great value. At the same time I wouldn't do such a thing again, if I were you, for anything less important than the saving of life. It was a big risk to take, and I should have suffered a life-long sorrow if anything had gone wrong with you."