Ch for desired length, thread over hook 3 times, insert in 6th ch from hook (5 loops on hook) and work off 2 loops at a time same as in tr c. For succeeding rows, ch 5 turn and work next d tr c in 2nd d tr c of previous row. The ch 5 counts as 1 d tr c.
Source: Revised Beginner's Manual, Star Book No. 62