That must be done, or his plan would fail.
He could get his hands upon Arthur Vane at any time; but the others were like birds on the wing--here to-day, and miles away to-morrow--and Pierre did not know where to find them.

Now, however, the difficulty was removed.

Frank and his friends were going on a hunting expedition, Arthur would ascertain when they were going to start, and what road they intended to take, and when the day arrived, the robber could call in his men, who were employed on the neighboring ranchos, and capture the boys without the least trouble.

Pierre was very glad that Arthur had got angry at Frank.
Meanwhile Frank, Archie, and Johnny, all unconscious of the plans that were being formed against them, enjoyed themselves to the utmost, and wasted a good deal of time every day in laughing over the incidents that had transpired during their ride to Captain Porter's ranch.

Archie, especially, had a great deal to say about it.