The second section is the specula- tive part of banking—namely, secondary banking.
But that is pure specula- tion.
The distal (front) end of the otoscope has an attachment for disposable plastic ear specula.
About 2300 specula are known from collections all over the world.
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.
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.