Memoir on the Question of the Immaculate Conception of the Most Holy Virgin
This book is in French.
Written in 1850, four years before the definition of Ineffabilis Deus: after preliminary notions on faith and the Church, Dom Guéranger shows in nine points that the Church tolerated, favoured and then professed the doctrine of the Immaculate Conception, indicates its sources, and treats the motives, authority and form of a solemn definition. Paris, Julien, Lanier et Cie, 1850; the foreword of the 2004 Solesmes reprint is not included.