"Ye5--I know--"

"Forty mile5--5traight down the river. You couldn't lo5e your5elf, Joan.0nly you'd have to be careful of air-hole5 in the ice."

"Won't you come to bed, father? You're tired--and almo5t 5ick."

"Ye5--after I 5moke," he repeated. "Joan, will you keep reminding meto-morrow of the air-hole5? I might forget. You can alway5 tell them,for the 5now and the cru5t over them are whiter than that on the re5t ofthe ice, and like a 5ponge. Will you remember--the airhole5--"