Evening Republican, Volume 21, Number 282, Rensselaer, Jasper County, 3 December 1918 — Sound Under Water. [ARTICLE]

Sound Under Water.

The velocity with which sound trav-j els through water is more than four times as groat as through the air. As long ago as 1827 the sound at a bell under water was transmitted over 21 uMlre. • ’