[Footnote 42: See Cantacuzene (l. ii. c. 39, 40, l. iv. c.
3, 23, 24, 25) and Nic. Gregoras, (l. xi. c. 10, l. xv. 3,
7, &c.,) whose last books, from the xixth to xxivth, are
almost confined to a subject so interesting to the authors.
Boivin, (in Vit. Nic. Gregorae,) from the unpublished books,
and Fabricius, (Bibliot. Graec. tom. x. p. 462 - 473,) or
rather Montfaucon, from the Mss. of the Coislin library,
have added some facts and documents.]