Posted by Peter H on October 29, 2007 at 21:56:07 from 86.162.195.179 user Peter_H.
In Reply to: Re: Longitude, was Time Ball, was Signal Stations posted by Jon on October 29, 2007 at 14:57:42:
a perfectly horizontal surface
Perfectly horizontal? Hmmm. A possible cue for discussion of the Bedford Canal Experiments, and the strange findings, but this is perhaps going a bit too far off-topic . . .