[41.] DEFINITIO XII.
[42.] SCHOLION I.
[43.] SCHOLION II.
[44.] SCHOLION III.
[45.] DEFINITIO XIII.
[46.] CONSECTARIVM.
[47.] SCHOLION I.
[48.] SCHOLION II.
[49.] DEFINITIO XIV.
[50.] SCHOLION I.
[51.] SCHOLION II.
[52.] SCHOLION III.
[53.] SCHOLION IV.
[54.] DEFINITIO XV.
[55.] CONSECTARIVM.
[56.] DEFINITIO XVI.
[57.] CONSECTARIVM.
[58.] SCHOLION.
[59.] DEFINITIO XVII.
[60.] SCHOLION I.
[61.] SCHOLION II.
[62.] SCHOLION III.
[63.] SCHOLION IV.
[64.] SCHOLION V.
[65.] THEOREMA.
[66.] CONSECTARIVM.
[67.] PROBLEMA I.
[68.] EXEMPLVM
[69.] PROBLEMA II.
[70.] EXEMPLVM I.