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The red Bacillus and its swelling in pure water. Image 1 - Unchanged little rods of different lengths. Images 2 and 3 - Beginning conditions of the changes. Image 4 - Final conditions; little rods almost completely swollen. Images 1, 3, 4 - With drawing apparatus using colored preparations. Image 2 - freehand from living material. Enlargement 2700/1.
