TABLE 3. 
Difference of Latitude and Departure for 22° (158°, 202°, 338°). 
Tn Plane Sailing. 
Forconverting Dep.into Diff. Long.and Dif’. Long.into Dep. 
In Middle Latitude Sailing. 
For converting Dep.into Diff. Long.and Diff. Long.into Dep. 
In Mereator Sailing. 
For multiplication of numbers by sines and by cosines, or 
solution of plane right-angled triangles. 
