Special Canons of the Four Figures 126 Sec.6.

Ostensive Reduction and the Mnemonic Verses 127 Sec.7.

Another version of the Mnemonic Verses 132 Sec.8.

Indirect Reduction 132 Sec.9.

Uses of the several Figures 134 Sec.10.Scientific Value of Reduction 135 Sec.11.