The black sentry stopped him.
"The General wants to speak to me," Gregory said, in Arabic.
The man called up the native sergeant from the guard tent, who asked what he wanted.
"I am here by the orders of the General." The sergeant looked doubtful, but went in.

He returned in a minute, and motioned to Gregory to follow him in.

The General looked at him, from head to foot.
"I suppose it is you, Hilliard," he said, "but I certainly should not have recognized you.

With that yellowish-brown skin, you could pass anywhere as a Soudan Arab.

Will the colour last ?" "I am assured that it will last for some days, but I am taking enough with me to renew it, four or five times." "Well, unless some unexpected obstacle occurs, I think you are safe from detection.