Photomicrographs of bacteria that precipitate iron and manganese
(scale bars are 10 micrometers)

Neutral Water
Gallionella ferruginea [braid-like in red floc from neutral water	Leptothrix cholodnii [sausage-like] in red floc from neutral water
Leptothrix discophora fresh rounded holdfasts [doughnut-like], which are parts of the bacteria that attach to rocks or microscope slides, like those here on microscope slide left in neutral water riffle	Leptothrix discophora [rods] on oil-like film from neutral water
Leptothrix discophora dehydrated holdfasts [doughnut-like] within hole on manganese-coated microscope slide in neutral water riffle	Leptothrix ochracea [drinking-straw like] in red floc from neutral water
Siderocapsa sp. [globular] on fecal pellet in red floc from neutral water	Siderococcus sp. [dot-like] in red floc from slightly salty, brackish water
Siderocystis sp. [agglomerations] on dead alga in red floc from neutral water	Toxothrix trichogenes [ladder-like] in red floc from neutral water
Acid Water
Thiobacillus-type [rods] in yellow floc from acid water	Leptothrix-type? [rods] on oil-like film from acid water

"Viewing Techniques through a Microscope"



Contact: Norrie Robbins
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