41 Mifcellanea Cutiofa. 



THE 



- " — ' 



LAWS 



o *?. % /.t 4| 



StereograpMck Projection, 



Laid down and Demonftrated. 



By Ja.Hodgfon, F.R.S. 



V KiSin30'3rfJ ggifbnnoywiiJ aril OJ aalgnA 

 DEFINITIONS. 



CIRCLES defcrib'd upon the Surface of 

 the Sphere, arc either great or fmall. 



1 . Great Circles are thofe which divide the 

 Surface of the Sphere into equal Parts ; of 

 through which, if the Globe be cut by a Plain, 

 it will be divided equally. 



2. Small Circles are thofe which cut the Sur- 

 face of the Sphere unequally ; or thro' which, 

 if the Globe be cut by a Plain, it will be 



ml 10 25 



ded into unequal Parts 



§, The 



