A technical diagram displaying microscopic view of bottom yeast cells with granulated textures inside a circular border 插畫檔

This nineteenth-century engraving illustrates a scientific representation of bottom-fermentation yeast, identified by the biological name Saccharomyces cerevisiae. The diagram portrays distinct, elongated fungal cells scattering across the field of view, characterized by internal granular stippling and irregular shapes resulting from sedimentary growth patterns. Enclosed in a bold round outline that mimics a laboratory microscope view, this detailed diagram originates from a technical study or industrial brewing manual published in the United Kingdom to demonstrate different yeast varieties.