midnight
He opened it and read -- `` Mr. Edward Blancove , -- When you rode by me under Fairly Park , I did not know you . I can give you a medical certificate that since then I have been in the doctor 's hands . I know you now . I call upon you to meet me , with what weapons you like best , to prove that you are not a midnight assassin . The place shall be where you choose to appoint . If you decline I will make you publicly acknowledge what you have done . If you answer , that I am not a gentleman and you are one , I say that you have attacked me in the dark , when I was on horseback , and you are now my equal , if I like to think so .