12 A SLIP UNDER THE MICROSCOPE Outside the laboratory windows was a watery grey fog, and within a close warmth and the yellow light of the green-shaded gas lamps that stood two to each table down its narrow length. On each table stood a couple of glass jars containing the mangled vestiges of the crayfish, mussels, frogs, and guinea-pigs, upon which the students had been working, and down the side of the room, facing the windows, were shelves bearing bleached dissections in spirit, surmounted by a row of beautifully executed anatomical drawings in white wood frames and overhanging a row