The Supplement to the Library of Jesuit Writers, published in Rome in 1816, mentions Grou's La Science du Crucifix, (The Science of the Crucifix); and its sequel, La Science Pratique du Crucifix dans l’usage des Sacrements de Pénitence et de Eucharistie (The Practical Science of the Crucifix in the use of the Sacraments of Penance and the Holy Eucharist)."Short Account", p. xv.
