This is a bibliography of literature concerning the anaerobic bacteria. The authors have examined, in the original with few exceptions, 10,500 journal articles and other published reports. While they do not claim that this is a complete index of all published articles in the field, reference to any important article not included may be obtained from the bibliographies of the the articles listed. The first volume is a chronological author index beginning with the year 1816. The second volume is a subject index, the names of authors appearing under each subject in alphabetical order. The subjects in the second volume under which the literature is classified include (1) habitat, with subsections referring to dairy products, soil, mud, sand, street dust, water, the intestinal tract of man and of animals, internal organs, urogenital system, circulatory system, the eyes, the skin, the muscles, the bone marrow, foods, surgical materials, ammunition and the