ten o'clock
I stared at him for some time , but he did not speak , and at last he began to breathe so heavily that I had to interrupt him . `` I say , Professor , '' I began , and he jumped up and began to rub his eyes . Then he sat down again and putting his elbows on his knees looked at me as if he was trying to remember what brought me there . `` This is my afternoon off , '' he said ; `` I have no pupils until to-morrow at ten o'clock , and then I give a fencing-lesson to the Honourable Mr. Bostock . Perhaps you know him ? '' I said that I did not , and I thought the Professor was a snob . `` What can I do for you ?