"It must take a sailor to see that sort of thing," remarked Belle. "What I see in the cloud looks like big, fluffy masses of cotton, streaked with something darker." "That's the wind," nodded Dave Darrin. "Now, girls, I don't want you to think me a muff. That wind may swerve, and not come this way, although in all probability the wind will get this way and the water will be rougher. If it does get rougher on the river, and if we had taken you two out, and the boat had capsized, then by some chance we might not have been able to get you to shore. What would your folks then say to us if we had had the miserable luck to survive you?" "You did just right," Laura declared promptly. "To tell the truth, I didn't want to disappoint either of you boys this afternoon, but I didn't believe the wind was quiet enough for boating on the river. But mother reminded me that I was going with two young men who had been trained as sailors, and that I ought to be as safe as I would in the home parlor." "Well, aren't you?" smiled Belle Meade. "Did you really want to go out on the river, Belle?" Dave asked. "Not when you don't believe it to be safe." "I suppose Foss will be joking around town about our being afraid of the water," muttered; Dan. "What do you care!" asked Dave quietly. "You're responsible to the United States Government--not to a few private citizens on the streets of Gridley." "You'll take us out on the water before your leave is over, won't you?" urged Belle. "A dozen of times, if you care to go," Dave; replied quickly. "In a sailboat?" quizzed Belle. "It must; be great fun to sail, and I've never been in a sailboat." "I'd rather take you out in a good, solid rowboat," Dave answered slowly. "Why, haven't you had much sailboat practice at Annapolis yet?" "We've had some," Darrin nodded. "But I'm afraid I don't believe much in small sailboats for girls' parties." "Oh, very well." "Now, Belle, you will begin to believe that I'm a muff at heart," Darrin remonstrated. "I won't anyway, Dave," Laura broke in. "I can see that you're merely determined that we shall take no risks when we go out with you. I shall feel very safe in whatever you propose for water sports." "It's a good deal better to be safe, than sorry, when you have girls under your care," Dan Dalzell added. The motor boat, a fast though a low-hulled craft, had been long out of sight up the river. Presently there came a new turn to the wind. Dan wet a forefinger and held it up to the breeze. "I hope Foss has sense enough to run in somewhere and tie up until the coming squall blows over," Dalzell remarked. "Are we going to have a storm?" Belle asked quickly. "Not rain, if that's what you mean," Darrin replied. "But I believe the river is going to be pretty rough before long." Ere two minutes more had passed Dave suddenly rose and straightened himself. "Look downstream, girls," he cried. "Do you see the big rollers coming?"