I expect
the pivots would be the hardest part of the work. I hope, some day,
myself to have another instrument made with a more readily changeable
polar distance, with trace and guide points working in the same
vertical, and a wheel permitting of inverse summation. If this project
is ever carried out, I hope I may be permitted to communicate further
particulars to our society.
* * * * *
After some forty years of immersion in the waters of the pool of
Echoschacht, not far from Hermannstadt, several human bodies have been
brought to the surface in a state of perfect preservation.
* * * * *
SOME HINTS ON SPIKING TRACK.
The usual dimensions of track spikes are 51/2 X 9.16 inches square,
their weight about half a pound each. Their common defects are
brittleness and imperfect points. In spiking track, the most important
points to be attended to are the proper spacing of the ties and
driving the spikes in such a manner that the ties shall be held in
place at right angles to the track and the rails in true gauge; to
insure the latter, the track gauge should always be used when spiking
the gauge side, the rail being held to proper position by a lining
bar.
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