63. The distinction between the public and the secret parts
of divine service, the missa catechumenorum and the missa
fidelium, and the mysterious veil which piety or policy had
cast over the latter are very judiciously explained by
Thiers, Exposition du Saint Sacrement,1. i. c. 8-12, p.
59-91; but as on this subject the papists may reasonably be
suspected, a Protestant reader will depend with more
confidence on the learned Bingham, Antiquities, 1. x. c. 5.