Selected various species with Navicula rhomboides. An arrangement from Monmouth, Maine, USA. A couple of the diatoms have gone wandering. Some visual degradation of the mountant. Prepared by WA Firth. Dated 12-14-[19]12. Olympus BHB microscope using 450nm LED light. 20x Nikon Plan Apo NA 0.65 objective. Olympus Aplanat Achromat condenser, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 7 images stacked in Zerene (Pmax).