The man might have been knocking for ten minutes.

It happened to be Lea's employer, the publisher of my first book.

He opened the door at last, and came in rather peremptorily.

He had the air of having worked himself into a temper--of being intellectually rather afraid of Lea, but of being, for this occasion, determined to assert himself.
The introduction to myself--I had never met him--which took place after he had hastily brought out half a sentence or so, had the effect of putting him out of his stride, but, after having remotely acknowledged the possibility of my existence, he began again.
The matter was one of some delicacy.

I myself should have hesitated to broach it before a third party, even one so negligible as myself.