Go back to the text and re-read a passage where Watson made a discovery. If Sherlock praises him, you've got your answer. I'm sorry if this wasn't much help, but I don't have any text to go off of.
In the poem it says " the silken sad uncertain rustling of each purple curtain thrilled me-filled me with fantastic terrors never felt" it is saying the curtains frightened him. that just what i think but it has been a while sense i read that poem so<span />
It meant war with Britain and America wouldn't have the support of Britain like it did as a colony.
