expectant motherhood on... smoking

oh boy. this is a good one... "A few years ago, Dr. Alexander M. Campbell of Grand Rapids, Michigan, sent a questionnaire to leading obstetricians in the United States asking the question: In your opinion does the smoking and inhaling of twenty-five or more cigarettes daily have an unfavorable effect on maternal health? Seventy-five replies were returned. Sixty-three, or 84 per cent, answered the question with "yes." Two, or 2.6 per cent, answered the question with "no." The ten others, that is 13.3 per cent, made replies which indicated some uncertainty. A number of obstetricians who answered "yes" qualified their replies by saying that moderate smoking is harmless. While most obstetrical authorities, then, disapprove of excessive smoking in pregnancy (twenty-five or more cigarettes daily), there is no reason for believing that a woman who smokes moderately, let us say ten or less a day, need change her custom at this time. If you have been smoking considerably more than this for several years, by no means try to give them up in pregnancy. There is no surer way of upsetting the nerves at a period when you should be calm and happy, or of converting a placid, sweet-tempered girl into an intolerable shrew. With negligible effort, even the most inveterate smoker can usually be content with a package a day or somewhat less, and if you arrange this there is no great cause for concern." again, bolding added by me for emphasis. a pack a day - no problem!