He was the very antithesis of Professor Marmion; a trifle below middle height, square-shouldered and strongly built, with thick, iron-grey hair, and somewhat heavy features which would have been almost commonplace but for the broad, square forehead above them, and the brilliant steel-grey eyes which glittered restlessly under the thick brows, and also a certain sensitiveness about the nostrils and lips which seemed curiously out of keeping with the strength of the lower jaw.

His whole being suggested a combination of restless energy and inflexible determination.
If he had not been one of America's greatest scientists, he would probably have been one of her most ruthless and despotic Dollar Lords.
"Ah, Miss Marmion, good afternoon! Pleased to see you," he said heartily, as Nitocris got up and held out her hand.

"Very kind of you to look us up so soon.

How's the Professor?
Well, I hope.

I see he's scheduled for a lecture before the Royal Society.