South of the main building there are remains of a watch tower ("specula") for the quick telegraphic exchange of messages with the mainland, e.g. by fire or smoke.
Those that considered the problem realized that the use of specula (mirrors in modern parlance) could permit two objects to be observed in a single view.
About 2300 specula are known from collections all over the world.
The distal (front) end of the otoscope has an attachment for disposable plastic ear specula.
But that is pure specula- tion.
The second section is the specula- tive part of banking—namely, secondary banking.
