Swallowing half an hour before closing time, that second dose of soma had raised a quite impenetrable wall between the actual universe and their minds. Bottled, they crossed the street; bottled, they took the lift up to Henry's room on the twenty-eighth floor. And yet, bottled as she was, and in spite of that second gramme of soma, Lenina did not forget to take all the contraceptive precautions prescribed by the regulations. Years of intensive hypnopaedia and, from twelve to seventeen, Malthusian drill three times a week had made the taking of these precautions almost as automatic and inevitable as blinking.