An arrangement of diatoms from Nagy Curtos, Hungary. Yellowing of the mountant, and the coverslip is broken. Prepared by WH Darlaston. Olympus BHB microscope using 450nm LED light. 10x Nikon Plan Apo NA 0.45 objective. Olympus Aplanat Achromat condenser, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 31 images stacked in Zerene (Pmax).