Des phenomenes de synopsie (audition coloree) : photismes, schemes, visuels, personnifications
Flournoy's 1893 Des phénomènes de synopsie is a Paris psychology study published by F. Alcan, documenting colour-hearing and synesthetic cases for a scholarly readership. Its pictures are hand-drawn diagrams on cream paper: spirals, circles and rising lines that map months, weekdays, numbers and days onto shapes, with a figure pointing at one diagram, offering designers loose, schematic ways to chart time and sequence.
