Microscope slide containing male and female lice, used in research relating to trench fever, made by F. Martin Duncan, 1918-19

One of thirteen microscope slides in wooden box, relating to research into the transmission of trench fever by human lice, by F. Martin Duncan, 1918-19. Slide M: 'Male and female P.Humanis Corporis in copulation No.135, P.205', handwritten on small label.

Duncan and his colleagues prepared this slide to image and study the incubation periods of B. quintana, the bacteria that causes Trench Fever, found in lice’s faeces and stomach. This slide features male and female lice reproducing, part of investigations into whether the microorganism could be transmitted by heredity. Findings like these were crucial in understanding and trying to prevent trench fever through improved sanitation and hygiene.