Non-Sporulating Anaerobic Bacteria of the Intestinal Tract

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Abstract
The investigation confirmed the claims of Eggerth and Gagnon, and Weiss and Rettger that so-called bacteroides constitute a large, and at times highly predominant part of the intestinal flora of man. Members of this group were also observed in various segments of the intestine of the white rat, their numbers being increased here by the addition of lactose to a basal meat diet. No definite relationship was noted between numbers of non-sporulating anaerobes and lactobacilli of the acidophilus-bifidus type. The isolated strains were divided into 2 main groups; Group A is gram-positive and is made up of 3 types; Group B is gram-negative and possesses 2 types. Types A-1 and A-2 may be regarded as anaerobic members of Lactobacillus. Type A-3 resembles Eggerth''s Bacteroides bifidus. Type B-1 is only meagerly represented. Type B-2 includes 46 strains, including various organisms previously descr. as distinct spp. of Bacteroides. In certain respects members of Group B bear resemblances to Bacterium pneumosintes, Bact. necrophorum and the oral fusiform bacteria, but cannot at this time be regarded as generically similar to these.

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