was written over fifty years ago and yet is as applicable today as it was then.I was reminded of the book when I was surfing the The B4RN project's web site where they have illustrated their progress using a barometer-style graphic. It is a little deceptive as is it appears to have a non-linear scale, but having being alerted to this kind of skullduggery by Huff, I knew I had to delve deeper.