) TABLE 3. 
Difference of Latitude and Departure for 16° (164°, 196°, 344°). 
In Plane Sailing. 
| For converting Dep. into Diff. Long.and Diff. Long. into De 
In Middle Latitude Sailing. ons ue Pe 
For converting Dep. into Diff. Long. and Diff. Long.into Dep. 
In Mercator Sailing. 
For multiplication of numbers by sines and by cosines, or 
solution of plane right-angled triangles. 
66806°—38——4. 
