Of the many doors of various sizes, right and left, a good few had glazed lights above; some however must have led merely into lumber rooms or such like, because when I brought myself to try one or two I was disconcerted to find that they were locked.

I stood there irresolute and uneasy like a baffled thief.
The confounded basement was as still as a grave and I became aware of my heart beats.

Very uncomfortable sensation.

Never happened to me before or since.

A bigger door to the left of me, with a large brass handle looked as if it might lead into the Shipping Office.