Three years later, however, the whole road was paved with silex from the temple to Bovillae, and in 191 B.C. the first mile from the gate to the temple was similarly treated.
The discovery of boron by Gay Lussac and Davy in 1809 led Berzelius to investigate silica (silex).
Under Nerva and Trajan the road was repaired; one inscription records expressly the paving with silex (replacing the former gravelling) of the section from Tripontium, 4 m.
- Fetishism - the belief in the magic or divine power of inanimate objects - is seen in the cult of stones, such as the silex of Jupiter (Iuppiter), which plays a prominent part in the ceremonial of treaty-making, and the lapis used in the ritual of the aquaelicium, a process, probably magic in origin, designed to produce rain after a long drought.