1 1 Mifcettanea Cur to fa, 



(fromEafl: toWeft)in comparifonof its Breadth 

 (from North to South) reprefented in a dou- 

 ble proportion of what indeed it is. 



1 8. For re&ifying this in fome meafure (and 

 of fbme other inconveniences)Mr.Jf r r/gk advi- 

 feth ; that (the Meridians remaining Parallel, 

 as before) the degrees of Latitude,remote from 

 the Equator, mould at each Parallel, be pro- 

 traced in like proportion with thofe of Longi- 

 tude. 



i p. That is; As the Co-Sine of Latitude > 

 (which is the Semi-diameter of the Parallel) 

 to the Radius of the Globe, (which is that of 

 the Equator : ) fo lhould be a degree of Lati- 

 tude, (which is every where equal to a degree 

 of Longitude in the Equator,) to fuch a de- 

 gree of Latitude fo protracted (at fuch diftance 

 from the Equator ; ) and fo to be reprefented 

 in the Chart. 



20. That is, every where, in fuch proporti- 

 on as is the refpective Secant (for fuch Lati- 

 tude) to the Radius. For, as the Co-fine, to 

 the Radius ; fo is the Radius to the Secant (of 

 the fame Arch or Angle - 0 ) as Fig. 4. 2. R j ; 



R.y: 



21. So that ( by this means) the pofition of 

 'each Parallel in the Chart, mould be at fuch 

 diftance from the Equator, compared with fo 

 many EquinoBial Degrees or Minutes, (as are 

 thofe of Latitude,) as are all the Secants (ta- 

 ken at equal diftances in the Arch) to fo many 

 times the Radius. 



22. Which is equivalent, (as Mr. Wright 

 there notes) to the Projection of the Spherical 

 furface (fuppofing the Ey at theCenter)on the 

 -concave furface of a Cylinder, ere&ed at right 

 Angles to the Plain of the Equator. 



23. And 



