And she drew her sun-mask from her belt and put it on.

Her wit, her most amazing resource, her anger, so amazed me that I rode on, dazed, swaying in the stride of the tireless gallop. Then in a flash, alert once more, I saw ahead the mist rising from the Harlem, the mill on the left, with its empty windows and the two poplar-trees beside it, the stone piers and wooden railing of the bridge, the sentinels on guard, already faced our way, watching our swift approach.

As we drew bridle in a whirlwind of sand the guard came tumbling out at the post's loud bawling, and the officer of the guard followed, sauntering up to our hard-breathing horses and peering up into our faces.

"Enderly!" I exclaimed.

"Well, what the devil, Carus—" he began, then bit his words in two and bowed to the masked lady, perplexed eyes traveling from her to me and back again. When I held out the pass for his inspection, he took it, scrutinizing it gravely, nodded, and strolled back to the mill.

"Hurry, Enderly!" I called after him.

He struck a smarter gait, but to me it seemed a year ere he reappeared with a pass viséed, and handed it to me.

"Have a care," he said; "the country beyond swarms with cowboys and skinners, and the rebel horse ride everywhere unchecked. They've an outpost at Valentine's, and riflemen along the Bronx——"

At that instant a far sound came to my ears, distant still on the road behind us. It was the galloping of horses. Elsin Grey leaped from her saddle, lifting her mask and smiling sweetly down at Captain Enderly.

"It's a sharp run to Gretna Green," she said. "If you can detain the gentleman who follows us we will not forget the service, Captain Enderly!"