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Description found in Archives

Scanning electron micrograph of diatom, a microscopic plant which is useful indicator of the acid-alkali balance of its environment. Magnification is indicated on the scale of the photograph [graphic material]. 


Ottawa, Ont

Place of creation

No place, unknown, or undetermined

1 photograph
Negative Film B/W - safety film
Graphic (photo)
90: Open
Graphic (photo)
Copy negative PA-156415
90: Open

Terms of use

Credit: D. Walker/Geological Survey of Canada, Energy Mines and Resources/PA-156415
Restrictions on use: Nil
Copyright: Energy Mines and Resources

Additional name(s)

Photographer: Walker, D.

Subject heading

1. Science - Botany - Diatom.
2. Surveying - Equipment.


Other system control no.