THE TERRESTRIAL GLOBE DESCRIBED. 



in the north point of the horizon, and the other in the LECT. 

 south. On this horizon are several concentric circles, .^-^.^J 

 which contain the months and days of the year, the signs 

 and degrees answering to the sun's place for each month 

 and day, and the 32 points of the compass.- -The gra- 

 duated side of the brass meridian lies towards the east 

 side of the horizon, and should be generally kept towards 

 the person who works problems by the globes. 



There is a small horary circle, so fixed to the north 

 part of the brazen meridian, that the wire in the north 

 pole of the globe is in the center of that circle ; and on 

 the wire is an index, which goes over all the 24 hours 

 of the circle, as the globe is turned round its axis. 

 Sometimes there are two horary circles, one between 

 each pole of the globe and the brazen meridian ; which 

 is the contrivance of the late ingenious Mr. Joseph 

 Harris, master of the assay-office in the Tower of Lon- 

 don ; and makes it very convenient for putting the poles 

 of the globe through the horizon, and for elevating the 

 pole to small latitudes and declinations of the sun ; 

 which cannot be done where there is only one horary 

 circle fixed to the outer edge of the brazen meridian. 



There is a thin slip of brass, called the quadrant of 

 altitude, which is divided into 90 equal parts or degrees, 

 answering exactly to so many degrees of the equator. 

 It is occasionally fixed to the uppermost point of the 

 brazen meridian by a nut and screw. The divisions 

 end at the nut, and the quadrant is turned round upon it. 



As the globe has been seen by most people, and upon 

 the figure of which, in a plate, neither the circles nor 

 countries can be properly expressed, we judge it would 

 signify very little to refer to a figure of it ; and shall 

 therefore only give some directions how to choose a 

 globe, and then describe its use. 



1. See that the papers be well and neatly pasted on Directions 

 the globes, which you may know, if the lines and circles \ 



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