"Orthohombric. Usually in tabular diamond-shaped crystals, formed by a short prism terminated by low…
"Orthorhombic. Usually in small tabular crystals with hexagonal outline. Striated parallel to the brachy-axis."…
"Flagellum of Noctiluca miliaris (highly magnified). s, transversely striated substance; b, base of…
"Sections through the unilaminar (A), bilaminar (B), and trilaminar (C) conditions of the typical biastoder.…