two o'clock
She dealt only in gentlemen . She had not told Snodgrass of the Clephane letter , nor anything as to Harleston except to refer casually to him as the confidential emissary in delicate matters of the State Department . She had found that Snodgrass was not the actual man in the case ; that he was simply a friendly confederate , or rather , to use his own words , `` a friend of Davidson . '' She had expected that the package or letter would be delivered to her in the taxi ; but Snodgrass had told her as soon as they were started that Davidson would forward it to him at the Rataplan by mail , not later than the two o'clock delivery . He would get it as they were leaving and transfer it to her , accepting the consideration as specified by Davidson , and receipting for it . He said flatly that he did not want to know the contents of the letter ; he was doing this favour for Davidson . He understood that it was to be entirely _ sub rosa _ and that nothing must ever transpire as to it .