Egg-shaped mass of zoogloea of Beggiatoa roseo-persicina (Bacterium rubescens of Lankester); the gelatinous swollen walls of the large crowded cocci are fused into a common gelatinous envelope.
Under favourable conditions the elements in the zoogloea again become active, and move out of the matrix, distribute themselves in the surrounding medium, to grow and multiply as before.
If the zoogloea is formed on a solid substratum it may become firm and horny; immersion in water softens it as described above.
Branched fruticose zoogloea of Cladothrix (slightly magnified).
C. Zoogloea stage of a Micrococcus, forming a close membrane on infusion - Pasteur's Mycoderma.
In some cases the zoogloea thread or tube has not been seen, the organism consisting entirely of the bacterioids.
The rod-like bodies from the intenor of the tube, which has considerable resemblance to the zoogloea of many Bacteria, are liberated into the interior of the cells of the tubercle and fill it, increasing by a process of branching and fission.
The zoogloea is now known to be a sort of resting condition of the Schizomycetes, the various elements being glued together, as it were, by their enormously swollen and diffluent cell-walls becoming contiguous.