324 ON THE ICTIS OF DIODORUS SICULUS. 
“Tetis,” of being islands at high water, and pen- 
insulas at low water, were no other than the 
Cassiterides, which have undergone a correspond- 
ing increase in number, and diminution in super- 
ficial contents, and now form two distinct archi- 
pelagos, the nearer and smaller one bearing the 
name of the Seven Stones, and the larger and 
more remote that of the Scilly Islands. 
