Geographic description of the province of Sinaloa, history of missionary efforts; censuses (given by River- Sinaloa, Fuerte, Mayo, Yaqui) listing missions and visitas, giving number of families and number of individuals for each. Notes that Yaqui is the Principal language of the province, but each River region has different dialects. The texts of 'oratio dominica', 'oratio angelica' and 'symbolum' appear in latin and Yaqui. (R. Perez) (1977)