Take a good look at him; for he is worth it.
He is a fresh-complexioned, middle-sized young man, not far, one would guess, from his thirtieth year.

He has large, shrewd, humorous gray eyes which twinkle inquiringly from time to time as he looks round through his spectacles at the people about him.

It is easy to see that he is of a sociable and possibly simple disposition, anxious to be friendly to all men.

Anyone could pick him at once as gregarious in his habits and communicative in his nature, with a quick wit and a ready smile.

And yet the man who studied him more closely might discern a certain firmness of jaw and grim tightness about the lips which would warn him that there were depths beyond, and that this pleasant, brown-haired young Irishman might conceivably leave his mark for good or evil upon any society to which he was introduced.
Having made one or two tentative remarks to the nearest miner, and receiving only short, gruff replies, the traveller resigned himself to uncongenial silence, staring moodily out of the window at the fading landscape.
It was not a cheering prospect.