Gregorii posthuma, or, Certain learned tracts written by John Gregorie. Together with a short account of the author's life and elegies on his much-lamented death published by J.G.

Of the Meridian without the Globe.

THe Brass Meridian is divided into 4 equal Parts or Quadrants, and each of them subdivided into 90 De∣grees, that is 360 for the whole Circle. The reason why this Circle is not divided into 360 Degrees throughout, but still stopping at the 90^th, and then again begining 10, 20, 30, &c. is, becaus the Uses of this Meridian, so far as in Degrees they are concern'd, require not above that Number. As for an Example: One use of the Meridian is to shew the Elevation of the Pole, but the Pole cannot bee elevated above 90 Degrees. Another is to shew the Lati∣tude or Distance of a Place from the Equator, which also can never exceed the 4^th part of the Circle; for no Place can bee further distant from the Equator then the Pole, which is just that Number of 90 Degrees.

Upon one of the North Quadrants of this Meridian, of som Great Globes, the Climes are set to the several Degrees of Latitude; and the Length of the longest Daie under the several Climes: which (if the Geographers would think so) might very fitly bee placed on the Lesser Globe's; for it were but dividing a Quadrant of the wrong side of the Meridian into 90 Degrees, and there would be room enough. In som other Globes the Climes are cast into a Table, and pi∣ctured upon som void space of the Globe. But the Division upon a Quadrant of the Meridian, is much more artificial, as hereafter shall bee understood. And the reason why a North Quadrant onely need to bee divided, is, becaus for the Climes of the Southern Latitude the reason is the same. And the reason why the Division is made upon a North Quadrant rather then the South, is, becaus our Globes are

fitted for our Selvs, and all our share of the Earth lieth in the North Latitude.