Then he took down from the rack the old and oily clay pipe, which was to him as a counsellor, and, having lit it, he leaned back in his chair, with the thick blue cloud-wreaths spinning up from him, and a look of infinite languor in his face.
"Quite an interesting study, that maiden," he observed.

"I found her more interesting than her little problem, which, by the way, is rather a trite one.

You will find parallel cases, if you consult my index, in Andover in '77, and there was something of the sort at The Hague last year.

Old as is the idea, however, there were one or two details which were new to me.

But the maiden herself was most instructive." "You appeared to read a good deal upon her which was quite invisible to me," I remarked.
"Not invisible but unnoticed, Watson.