Recent progress in knowledge of the tubercle bacillus gives color to hopes that the deadly little beast may in the near future surrender unconditionally to the siege of preventive medicine. The most interesting med-cal news of the week was the, announcement by Dr. Georges Dreyer, professor of pathology at Oxford University, of a successful method of inoculation in tuberculous guinea-pigs and other animals.
Bacteriologists have long used anilin dyes of various colors to " stain " different species of bacteria. The tubercle bacillus does not stain easily, but when it does, it...