"B-r-r!" shivered Washington, at this statement. "Dis chile don't t'ink
much ob such a surreptitious pedestrianation as dat, den. Don't like
no cold wedder, nohow! And Buttsy don' like it, needer."

"Who's Buttsy?" demanded Jack, grinning.

"Why, fo' suah," said the darkey, gravely, "you knows Christopher
Columbus Amerigo Vespucci George Washington Abraham Lin----"

"But you wouldn't expect to take Christopher Columbus And-so-forth to
Alaska with us; would you?" asked Andy Suggs.

"Why not?" demanded the darkey. "He flowed to de moon in de
perjectilator; didn't he? Huh! In co'se if de perfessor goes after
disher chrysomela-bypunktater, I gotter go, too; and in co'se if I go,
Buttsy done gotter go. Dat's as plain as de nose on yo' face, Andy."

The hunter rubbed his rather prominent nasal organ and was silenced.
Jack and Mark had turned more eagerly to the professor as the latter
began to speak:

"Yes, Dr. Todd is my good friend. He turns to me for help quite
properly; who else should he turn to?"

"But, Professor!" ejaculated Mark, warmly. "Are you to be driven off
to Alaska at your age to hunt for this herb--which is perhaps only the
hallucination of a madman?" "Mark's hit the nail on the head,
Professor!" declared Jack. "I believe this Todd must certainly be
'touched' in his upper story."