three o'clock
Now it is a remarkable head -- just the head I have been wanting for my Marshal Romero -- and if , with your rapid pencil and your skill in seizing expression , you could manage this for me ... '' `` I will do my best , '' said Müller . `` A thousand thanks . I will go now ; for when I am gone he will be off his guard . You will find me in the den up to three o'clock . Adieu . '' Saying which , the stranger passed on , and went out . `` That 's Flandrin ! ''