Ritual (Մաշտոց) Constantinople, impr. Asdvatsadour de Constantinople(Աստվածատուր), 1714. In-8°. 712 pages. Two woodcuts (page 2: the Baptism of Christ, signed by Krikor de Merzifon / Գրիգոր Մարզվանեցո and page 638: Saint Mesrob Machtots). Liturgical book containing the rites of the sacraments that punctuate human life (birth, baptism, marriage, funeral). Book in poor condition but complete. Several clumsy but charming period drawings in black ink, and handwritten inscription: Ce livre de Machtots est un souvenir de l'église Sainte-Marie de l'année 1715, le 22 juillet. Vintage binding with trace of decorative cross on first board, in poor condition, with numerous wormholes.