With the somewhat newly extended interest in life saving classes at a rather younger level than heretofore (yes, even Brownie Scouts have it), this is a story that may well raise the hackles of the informed and careful adult. Sandy is a small boy who teaches himself in his bathtub to swim underwater by holding his breath, and finds he is able to effect an expert transition when swimming in a lake. This in itself is open to question. His brother and sister are alarmed when he disappears and alert Aunt Martha, who sends a dog out to save him. His protests go unheeded and not until he in his turn saves the dog does he win the respect of the others. The story will raise many questions in adult minds:- would Aunt Martha have sent three children out in a rowboat alone (with or without life jackets)? Would not the children have been cautioned against diving off the boat? Anne Cleveland's line drawings put this in the entertainment class; but the text is something else again.