They were but some twenty yards away.
"Up you go, Surajah.

We have not a moment to lose!" Dick sprang up the steps, Surajah following.

As they reached the top of the wall, a shot was discharged at them by the sentry at the gate, who, ignorant of the cause of the sudden uproar, had been standing in readiness to fire.

He was, however, too excited to take aim, and the bullet flew harmlessly over their heads.

In another instant, they sprang over the parapet.
"Lower yourself by your arms, and then drop." The wall, like many others of its sort, was thicker at the base than on the top, and the foot projected two feet beyond the upper line, so that it was a sharp slide, rather than an absolute fall.