The mustang seemed to feel that unwonted exertions were required of him.

Close on his heels followed the indomitable Jo Bumpus, who panted vehemently and perspired profusely from his unwonted exertions.

The fat old negress, still panting from her unwonted exertions, straightened herself, pushed back her turban, and gazed in round-eyed wonder upon her young mistress.

"I want a chair!" gasped the Major, whose purple features seemed about to burst with his unwonted exertions.