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Description and Use os th

PROBLEM VIII.

To find what places have mid-day,or the fun, upon their meridian,at any given hour of the day inany place proposed.

147. First, Let the hour proposed be Xo’clock in the morning at London.

As the real diurnal motion of the earth,here represented by the terrestrial globe, isfrom west to east,

All places to the eastward of any parti-cular meridian must necessarily pass by thefun, before the meridian of any other placeto the westward of that particular meridiancan arrive at it.

148. And therefore as the first meridianon our new terrestrial globe passes throughLondon, if the proposed place be London,as in this cafe, bring the given hour, whichis placed on our globes, to the east of Lon-don if it be in the morning, but to the westof London if it be in the afternoon, to thegraduated fide of the strong brass meridian;and all those places which lie directly under

it,