The investigation concerning the bacteria decomposing cellulose has, hitherto, attracted the attention of many workers from various countries, and it is, now, one of the important problems in the bacteriological field. The decomposition of cellulose is generally carried on in nature aerobically or anaerobically, by a large number of different microörganisms. While making some experiments in this field; I isolated a new organism from a piece of decaying cloth, found in a pond. It developed and decomposed cellulose under aerobic conditions at ordinary temperature. I continued work with pure cultures, and I have described the morphology and other properties of this new organism, namely, Pseudomonas fibrolysis.

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