ten o’clock
What did you do on that day ? -- I want you to be as minute and precise as possible . I wish to know all you did that day , if it is not asking too much of you . `` A. I rose late , at ten o'clock , for my father and I had returned home late on the night previously , having been to dinner at the reception given by the President of the Republic , in honour of the Academy of Science of Philadelphia . When I left my chamber , at half-past ten , my father was already at work in the laboratory . We worked together till midday . We then took half-an-hour 's walk in the park , as we were accustomed to do , before breakfasting at the chateau .