Sectio 44
No. 44. Notes produced from several Birds in succession, by a
Stream of Water.
SOUNDS are produced at intervals in another way as follows. A vessel is
taken (fig. 44), provided with several transverse partitions. In the
chambers are placed siphons conducting into the chambers beneath, the
streams through them being unequal. In the lower compartment is
placed the pipe which produces the sound, and the stream
of water falls into the upper compartment. It will be
found that when the upper chamber is filled, the water passes
through the siphon placed there into the chamber I
below, until it has arrived at the lowest, and the
vessel being air-tight, the air in this chamber is driven out
through the pipe and produces the sound.
Section 45.
Index.