nine o'clock
I 've just invented a new sighting apparatus . I 'll show you the model if you 'll come to the hotel . '' Sypher looked at his watch and excused himself on the ground of business engagements . Then he had to dine and start by the nine o'clock train . `` Anyhow , '' said he , `` I 'm ashamed at not having done anything with the guns . I did show the proofs to a naval expert , but he made all sorts of criticisms which did n't help . Experts know everything that is known and do n't want to know anything that is n't .