the earth on its axis. sion are on so slight a scale that the errors of observa- inches in diameter. There is a hole 5 inches in dia- The elements of this diurnal component are well tion may easily exceed the magnitude of the quantities meter in its center. The rays of light from the star known,… … not well known. In fact, ment is supported at two a better knowledge of THIRTY-SEVEN-INCH MILLS REFLECTING TELESCOPE AND SPECTROGRAPH, points in such a way that them constitutes one of strains in the supporting the most pressing problems in astronomy, and it is truss cannot by any possibility…
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