Marian, it appears, met him at Towers Cottage the year before last, and had some scientific lessons from him.

He was quite unknown then.

It was rather a curious coincidence.

I did not know of it until about a month ago, when he read a paper at the Society of Arts on his invention.

I attended the meeting with Marian; and when it was over, I introduced him to her, and was surprised to learn that they knew one another already.