23. The text clearly does not refer to the figure that was published. To add even more confusion, the figure legend refers to letters not present in the figure, and Fig 6 appears twice on the plate – the first time erroneously for Fig. 5! I have corrected and rewritten the text to make sense in relation to the figure 6 (on lower row) and 7 of Fonderie en Caracteres Planche in which the shape of the square or jig and its relation to the stone is perfectly clear.