Slide showing four diagrammatic drawings of 'The middle phases of mitosis in the first cleavage of the Ascaris-egg'. Slide shows four diagrammatic drawings of' 'the middle phases of mitosis in the first cleavage of the Ascaris-egg'. Four images are labelled A-D. There is a central image of worm-like creatures. Below image on rear pane, a title can be read backwards through the tape which helps identify the image. The title reads as follows 'Fig 24. The middle phases of mitosis in the first cleavage of the Ascaris-egg. (Boverl)'. The Ascaris lumbricoides is the common large roundworm parasite. Late 19th - early 20th century