SUN-DIALS AND THEIR MOTTOES. 
7 
The next dial that I wish to bring to your notice is a Roman one 
in my collection which has many points of interest about it. In the 
Fig. 7. —Roman Dial. 
first place, so far as I can learn, only four portable dials made 
in classical times have ever been discovered : the Herculaneum 
“ham”-dial, a bronze disc found at Aquileia, a dial found at 
Cortona about 1741, and the dial here represented (Fig. 7). 
