Abstract

                                The terms, bacterium, conveys to many people the ideas of disease, infection and death. They seldom hear it used except by members of the veterinary and medical professions in connexion with diseases of man and animals, and have therefore been led to believe that most bacteria are disease producing. Comparatively few bacteria, however, cause disease, the vast majority are harmless, and many are of great industrial importance. Moreover, if it were not for the action of bacteria in nature, conditions would quickly arise which would render animal and plant life impossible in this world.

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