He was cool enough not to seem to notice it.

He secured it, however, and found an opportunity to look at it, without being observed by the boys.

It required no immediate notice.
He who should have enjoyed the privilege of looking upon Mr.Bernard Langdon the next morning, when his toilet was about half finished, would have had a very pleasant gratuitous exhibition.

First he buckled the strap of his trousers pretty tightly.

Then he took up a pair of heavy dumb-bells, and swung them for a few minutes; then two great "Indian clubs," with which he enacted all sorts of impossible-looking feats.