Look him up in the index, Mac.

That will soon tell you whether we have got any such mug, or not." McAdams drew out a thick volume from a near-by cabinet, and ran his fingers swiftly down a long column of names, indexed under the letter "H." Suddenly he stopped, with an exclamation.
"The lad is here all right--Government offence, fifteen years ago, third arrest; mugged number 28113.

Let's look him up, and see if he is the same man.

Come over here, Captain." "Is that the fellow ?" he asked.
West studied the face seriously.
"Yes, I believe it is, Mac," he said at length.

"He looks much older now, but those are his features all right.