“How interesting!” exclaimed Arden. “I wonder——”

But she never finished that sentence. Just at that moment something happened.

Two big Negroes, one carrying a crowbar and the other an ax, came fairly leaping out of the open front door of Sycamore Hall. They were mouthing something unintelligible and seemed to be rushing straight for Sim and Terry.

“Oh! Oh!” gasped Arden. “Oh, Dick, what is this?”

Straight for Sim ran the two Negroes, their ragged clothes white with plaster dust. They were still mumbling and waving their hands in a terrified way. This was too much for the nervous horse on which Sim was mounted. He reared sharply, nearly throwing the girl off, though she had a good seat, and then, wheeling, the beast ran wildly up the road past Sycamore Hall.

Terry managed to control her animal, though he too showed a desire to bolt.

“Oh, Dick!” cried Arden again.

“I’ll get her!” shouted the young groom, and spurring his mount he dashed away after Sim. Left to themselves, Arden and Terry looked at each other with frightened eyes. The two colored men ran into the woods across from the Hall, still mumbling in a strange way and showing every evidence of terrible fright.

“Come on, Terry, we’ve got to follow!” called Arden.

They urged their steeds after those of Sim and Dick. When they reached the top of the hill they could see that Sim was safe. Dick had dismounted and was holding her still frightened animal. Sim was soothing the creature with neck-pattings and calming words.