Jar of Water in Piano--Truth or myth?

[Mike Kurta]

    I also have seen many empty Mason jars in the bottom of vertical pianos.
Its my feeling that the surface area of the water exposed to the air is too
small to have any real benefit, and without some method of infusing the
moisture into the air (fan, heat, whatever) is does little good.  Then, the
adage "out of sight, out of mind" takes over, the owner forgets to fill the
jar, and its ineffective anyway.
    Mike Kurta
    Auburn, NY  Home of the Wegman piano