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and consequently the individuals become more opaque


Plate III. Leptothrix Meyeri. The individuals are seen to be covered with a thick mass of iron peroxide. In this particular case the deposit has lost its transparency.
(cropped from page)
illustrating David Ellis. "A Preliminary Notice of Five New Species of Iron-Bacteria." Proceedings of the Royal Society of Edinburgh 28 (1908) : 338-342 + three plates
Stanford copy, no date of digitization

...and differs from it in an entire absence of shapely-contoured walls, and in the nature of the iron deposit, which is at first very transparent, so that the walls are easily visible even though the thickness of the individual, owing to the deposit of iron, has been trebled. Later, the density of the deposit gets greater, and consequently the individuals become more opaque.
ex p 340

21 February 2014
tags: David Ellis; iron; iron-bacteria; iron-water; opacity; walls