and not the stars. Sidereal of the larger seaports, time balls are dropped at noon, to be stretched vertically and two horizontally across time must therefore be converted into solar time. and give mariners an opportunity to correct their the fleW of view. The instrument is so adjusted that This is… … The process is, therefore, very cheap and its 34.3 III. AN OBSESYATOST TRANSIT INSTRUMENT EOS DETERMINA- results are immediate and absolutely certain. 43.0 IV. TION OE STANDAED TIME. DIAGRAM SHOWS RETICLE 0E TRANSIT. 51.7s. 7h. 9m. V. : ♦ . « . ♦ It is calculated, states a contemporary,. that…
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