Posted by wallyd on January 07, 1998 at 13:37:55:
I recently helped some friends move into their new
house (built in the 40's). In their basement, above
the boiler (hot water heating system) are about 6
glass bulbs that are about 2/3 full of a clear liquid.
The bulbs are sealed and hang from the floor joists
in wire hangers. Does anybody have any idea what
these are or if they are related to the heating system
in any way?