Slide showing 'diagram illustrating assortment of two mutant characters, vestigial and ebony'. Slide shows a 'diagram illustrating assortment of two mutant characters, vestigial and ebony'. Diagram consists of five rows of flies illustrating mutations. The top two rows have symbols alongside them, with no corresponding information. Title below slide reads: 'Fig. 11 - Diagram illustrating assortment of two mutant characters, vestigial and ebony'. White label in upper left corner of slide reads 'Newton & Co, 43 Museum Street, London, WC1'. Late 19th to early 20th century