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property and preserves it almost intact during the whole duration of its existence.These new char¬ acters are fixed and are easily entertained by cul¬ ture in successive generations.Thus, in consid¬ ering these types in themselves, without taking into account their origin, they may be regarded as forming one distinct species.It would not be impossible that the special types of the bacillus anthracis exist in nature with properties abso¬
A Sat, study studied this question.