For similarity between the ancient custom of allowing invalids to sleep in the temples of Serapis and the mediaeval custom of having them sleep in the church of St.Anthony of Padua and other churches, see Meyer, Aberglaube des Mittelalters, Basel, 1884, chap.iv.For the effect of "the vivid belief in supernatural action which attaches itself to the tombs of the saints," etc., as "a psychic agent of great value," see Littre, Medecine et Medecins, p.

131.
For the Jansenist miracles at Paris, see La Verite des Miracles operes par l'Intercession de M.de Paris, par Montgeron, Utrecht, 1737, and especially the cases of Mary Anne Couronneau, Philippe Sargent, and Gautier de Pezenas.

For some very thoughtful remarks as to the worthlessness of the testimony to miracles presented during the canonization proceedings at Rome, see Maury, Legendes Pieuses, pp.

4-7.
There are undoubtedly serious lesions which yield to profound emotion and vigorous exertion born of persuasion, confidence, or excitement.

The wonderful power of the mind over the body is known to every observant student.