Jean-Pierre Colignon wrote this Book (& e-book): "Curiosités, jeux et énigmes de l'histoire du monde" from which the following text on Father Rougier is quoted.
Éditeur : Albin Michel -- ISBN : 978-2-226-29548-4 -- EAN : 9782226295484
The original French text:

Colignon page 1
Colignon page 1

Colignon page 2
Colignon page 2

Colignon page 3
Colignon page 3

Colignon page 4
Colignon page 4

Colignon page 5
Colignon page 51
My translation to English (please be patient with me - French & English are not my mother languages):

Colignon page 1
Colignon page 1

Colignon page 2
Colignon page 2

Colignon page 3
Colignon page 3

Colignon page 4
Colignon page 4
You can download both versions as PDF file too. Click the images at right.