Persp"ctive, What is it? [6]-[12].

Pictures painted according to positions they are to occupy, [59].

Point of Distance, [16]-[21].

Po"nt "f Sight, [12], [15].

Points in Space, [129], [137].

Portico, [111].

Projection, [21], [137].

Pyramid, [189], [190], [191], [193]-[196].

R

Raphael, [3].