Abstract
An historical survey of the photographic documentation of diatoms is followed by a description of a modern technique of photomicrography in ultraviolet light. With commercially available equipment, this yields the ultimate detail obtainable with a light microscope. The technique can be especially helpful in the examination (e.g., for typification) of specimens in slides with a low refractive index mounting medium, if no original material remains for scanning electrom microscopy studies.
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Acknowledgements
We thank Wulf Herwig for the sample containing the Gyrosigma sp. and for the photomicrograph of .