To the Editor: May I pick a flaw with a flawpicker? I refer to the letter, "Apothecary System Useless and Hazardous," in the March 27 issue. To quote the first sentence of the third paragraph, "Ev ...

By putting the decimal point in the wrong place, Mr P. had made a serious miscalculation. Most pharmacists at the time were much more familiar with the traditional apothecaries’ system, which measured ...