'Hidden faces'

The portraits of numbers 5, 11 and 13 are remarkable in their absence of facial features, compared to the other portraits. As this is a painting and not an accidental snapshot, there must be a reason for the way these three people are treated. Number 3 seems to be quite young and could be one of the assistants (or 'élève') that are scattered all over the painting. Number 11 looks older than number 3 and it is therefor less likely that he is an assistant too. As for number 13: the averted face could symbolize a separation of that person from the rest of the Compagnie, like in the case of Auzout who left the Academie in 1668 or as in the case of De La Chambre, who died in 1669.