On a rather informative website on aqueducts, I came across the following passage:
Frontinus is another classical author who wrote about aqueducts. Around 100 AD he was supervising the aqueducts of Rome and wrote the book 'de aquae ductu'. Remarkably he did not make any reference to siphons although in his time they were already applied all over the Greek and Roman world and even in and around Rome.
This is remarkable indeed. Is it true? I wouldn't even know any word for "siphon"; vectis seems rather broad?
