The geology of this parish is the same as the southern part of
Calstock and the eastern part of Callington.
[40] The bread about to be transmuted by consecration into
actual flesh must be made, at least as to the larger part,
of flour from wheat, or the conversion will not take place.
See the Summa totius Theologiæ, by St. Thomas of Aquine,
Part iii. Quæstio lxxiv. Articulus iii. Conclusio, where the
authority of St. Augustine is adduced to prove that the meal
of any inferior or harder grain would be typical of the
severity enacted by the Laws of Mount Sinai, whereas “Hoc
Sacramentum pertinet ad suave jugum Christi, et ad veritatem
jam manifestatam, et ad populum spiritualem. Unde non esset
materia conveniens hujus sacramenti panis ordeaceus.”――EDIT.