Slide showing photograph of 'Bilharzia haematobia'. Slide shows black and white image of two worm-like (flatworm) animals. One seems to be attached to the other. Label above image is in German and reads, '(Bilharzia haematobia) [male] im Canalis gynaecophorus das [male] fuhrend, aus einer Vene des Menschen, Cairo. 9:1.' Label below image reads, 'Dr. W. Stempell, Greifswald, phot. Nachbildung untersagt.) Herstellung u. Vertrieb: Ed. Liesegang, Dusseldorf.' Number '29' written on tape on top edge of slide. Late 19th - early 20th century