The divers advanced threateningly, evidently confident that they could drive away the three men with their superior
But this was not so easy.
Frank and his companions stood side by side.
“Do not strike unless we are really attacked,” he declared, “then do not take their lives if you can help it.”
The foremost of the Aurelian’s men made a dive at Frank.
The young inventor struck the fellow over the helmet with the flat end of his spade.
The shock laid him out senseless; but another followed him.
This one struck Clifford to his knees. But Barney went to the rescue and saved the explorer’s life.
A quick blow from the Celt’s spade dashed the diver over senseless. The other three drew back.
It was now even up. Barney was spoiling for a fight.