Hydraulos

Hydraulos (Gk., Lat.) [Gk. hydor, water + aulos, pipe], (Fr.: orgue hydraulique; Ger.: Wasserorgel), early type of organ that differed from the so-called “pneumatic” organ only in its wind supply and its size. The wind supply consisted of 2 essentials: pumps and a reservoir. The latter was a large hexagonal container half filled with water; it formed the lower section of the hydraulos. Inside it was a bucket-like object of metal called pnigeus, placed open side down on feet; a connection led…