[ai] Hermitage, Petrograd.
[aj] Boston Museum, U. S. A. See Plate 15.
[ak] As in Dow's The Dentist, Schwerin Mus., and a similar work at the Louvre.
[al] Hermitage, Petrograd.
[am] Bologna Museum.
[an] For example, Rubens's David's Last Song, Frankfort Museum.
[ao] See examples by Ary Scheffer, Luxembourg; and H. Thoma, Burnitz Coll.
[ap] Both at the Louvre.
[aq] The Bargello, Florence.
[ar] As in K. Meyer's picture.