m. 1: C| meter supplied.
m. 28: 3----3 changed to 2----3 by analogy with similar passages at mm.
10, 20, etc.
m. 32: Original says "Questo farassi sette volte"; I've replaced this
with "7x" (this repeat is not in MIDI file).
m. 33: Original meter is 3.
m. 69: Whole-note rhythm symbol changed to half note.
m. 70: Original meter is 3.
mm. 77, 79, 81, 82, 83: First note changed from dotted half to undotted
half.
m. 103: Original meter is 3.
m. 114: Fourth chord changed from ---330 to ---320 by analogy with m.
112.
m. 120: First chord is a bit unclear.
mm. 124: C| meter supplied (blank space was left in original).
Apparently this is a written-out hemiola.