[71.] Definitio 1.

[72.] Definitio 2.

[73.] Definitio 3.

[74.] Definitio 4.

[75.] Experimentum 1.

[76.] Experimentum 2.

[77.] Definitio 5.

[78.] Definitio 6.

[79.] Experimentum 3.

[80.] Experimentum 4.

[81.] Experimentum 5.

[82.] Experimentum 6.

[83.] Definitio 7.

[84.] Experimentum 7.

[85.] Experimentum 8.

[86.] Experimentum 9.

[87.] Experimentum 10.

[88.] Experimentum 11.

[89.] Experimentum 13.

[90.] SCHOLIUM De centro Gravitatis.

[91.] De Centri gravitatis inveſtigatione.

[92.] SCHOLIUM 2. Arithmetica Mechanica.

[93.] CAPUT X. De Vecte, Machinarum ſimplicium prima. Definitio 1.

[94.] Experimentum 1. 2. & 3.

[95.] Experimentum 4.

[96.] Experimentum 5.

[97.] Experimentum 6.

[98.] Experimentum 7. & 8.

[99.] Experimentum 9

[100.] CAPUT XI.