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A P P E N D I X II.

You then turn about the HorizcritalHandle, and the Equatorial Eland le, bothat the same time, till you find the Sun pre-cisely concentrical with the Field of theTelescope. If you have a Clock or Watchat Hand, mark that Instant of Time; andby looking upon the Equatorial Plate, andNonius Index, you will find the Hour andMinute of the Day, which comparing withthe Time Ihcwn by the Clock or Watch,shews how much either of them differ fromthe Sun. In this manner you find the Hourof the Day.

Now, in order to find the Meridian ofthe Place, and consequently to have a Mark,by which you may always know your Meri-dian again, you first move the EquatorialPlate, by Means of the Equatorial Handle,till the Meridian of the Plate or Elourlineof 12. is in the Middle of the Nonius Index;and then, by turning about the Declination-Handle till the Telescope comes down to theHorizon, you observe the Place or Pointwhich is then in the Middle of the Field ofthe Telescope ; and a supposed Line drawnfrom the Centre of this Field to that Pointin the Horizon, is your Meridian Lin e -The best Time of the Day for making thisObservation for finding your Meridian, I s

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