Contact photomicrography in the ultraviolet on high-resolution plates.
Ultraviolet photographs of cells can be made without quartz optics by placing the cells on high-resolution plates capable of resolving more than 2000 lines per millimeter and by passing monochromatic radiation of the desired wavelength through them to the emulsion. Prints can be made by enlarging the resulting negative with a microscope to the magnification desired.
McWhorter
F P
FP
Leach
C M
CM