Mr. Bobbsey telephoned, and a little later Tommy was gliding about the frozen lake on a pair of Bert's skates, which, however, were quite good. Bert had laid them aside when he had been given a pair of shoe hockeys.
"Well, I'm warm enough now," said Freddie to Johnnie, after a bit. "Shall we go out and skate some more?"
Johnnie was willing and out they went. It seemed a little warmer now, for the sun was up higher. Many skaters were on the lake. All at once Freddie saw Tommy skating over toward the place which Bert had spoken of as not being safe.
"Tommy! Tommy!" cried Freddie. "Don't go there. The ice is too thin!"
But he was too late. Straight toward the point Tommy glided and the next minute there was a cracking of the ice and Tommy went down out of sight.
