Not sure what to make of this one. Described as Diatoms, Richmond (is that Richmond UK, or US?). Dated 1st August 1932, and described as ‘Experiment’. Two strews, one marked as ‘Ord’ and the other ‘Chalk’. Really not sure what that is referring to. No makers name, although the style is a little reminiscent of some I have by Horace Dall. Olympus BHB microscope using 450nm LED light. 10x Nikon Plan Apo NA 0.45 objective. Olympus Aplanat Achromat condenser, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. Single, unstacked images.
If you have any ideas as to what is going on with this (or recognise the maker), please let me know.