Text emphasis is displayed as _Italic_ and =Bold=. Whole and fractional parts are displayed as 8-1/2. Although in general, subscripts are denoted _{#}. The formulae for the minerals are presented as K2OAl2O3·6SiO2 (Orthoclase) where the number following the element would normally be subscripted. Cantor Lecturer on Brickmaking, Author of _British Clays, Shales and Sands_; _The Clayworker's Handbook_, etc., etc.…
Or read it translated: 日本語 · 中文 · हिन्दी · Español · العربية · Français · বাংলা · Português · Русский · Bahasa Indonesia · اردو · Deutsch · Kiswahili · 한국어