1. Introduction -- 2. Experimental -- Dissociation in virulent strains after prolonged cultivation -- Dissociation in attenuated strains -- Dissociation of anthrax strains in 65 per cent carbon dioxide -- Dissociation of virulent anthrax strains on 50 per cent serum agar in 65 per cent carbon dioxide -- Comparison of immunity produced in rabbits by a number of avirulent variants and an ordinary vaccine -- The effects of different concentrations of carbon dioxide on the dissociation of virulent strains on 50 per cent serum agar -- Dissociation of attenuated anthrax strains on 50 per cent serum agar in 65 per cent carbon dioxide -- 3. Discussion -- 4. Summary and conclusions -- 5. References. 50 per cent serum agar in 65 per cent carbon dioxide
