CHAPTER IX.
A NARROW SQUEAK WITH THE O.C.
Jetson's next blow grazed Midshipman Dalzell's chin.

The follow-up blow landed on Dan's left ear.
Now Dalzell "sailed in" in earnest.

He attacked forcefully and swiftly.
Jetson was forced to give ground.

Dan pursued him around the room.

Being no coward, Jetson stood well up to the work, driving in for himself at least two out of every five blows that were landed.
Rap-tap-tap! sounded on the door, but neither combatant heard.
Smash! Dan's forceful right landed on Jetson's neck, sending that midshipman to the floor, whereupon Dalzell sprang back three paces.
"Take your time getting on to your feet," called Dan in a low voice.
"I don't want any time," snapped Jetson, leaping to his feet.
The words of both speakers were heard at the door, and the visitor who had knocked now promptly entered.
Fortunate it was for the combatants facing each other that the intruder was not one of the discipline officers.