four
o'clock
`` He never came home last night at all , '' said Mrs. Betts , looking away again out of the window . `` He wandered about the fields and the sheds all night . I looked out just as it was getting light , and saw him walking about among the wheat plots , sometimes stopping to look , and sometimes making a note in his pocket-book , as he does when he 's going his rounds . And at four o'clock , when I looked again , he was coming out of the cattle-shed , with something in his hand , which he took into the laboratory . I saw him unlock the door of the laboratory and I bent out of my window , and tried to call him . But he never looked my way , and he stayed there till the sun was up . Then I saw him again outside , and I went out and brought him in .