Double Cross, [218].

E

Ellipse, [145], [146], [147].

Elliptical Arch, [207].

F

Farningham, [95].

Figures on descending plane, [92], [93], [94], [95].

Fig"res "n an inclined plane, [88].

Fig"res "n a level plane, [70], [71], [72], [73], [74], [75].

Fig"res "n uneven ground, [90], [91].