LONGITUDE. 



Same Example by verfed Sines. 



The referved logarithm 9.9970217 i» the logarithm of 0993164, which is twice 0.496582, the natural cofine »i 

 60^ 13' j^'', the auxiliary angle M in Mendoza's formula. 



The above example by direft calculation from M. Mendoza's formulse, would ftand thus ; 

 Apparent diftance - 108° 42' j" Horizontal parallax 



Apparent altitude 

 Correftion^ — r ^ 



6 27 30 = h 

 7 46 



Apparent altitude > 

 Correftion/ — r 



6 19 44 



H 



55' «9" 



54 1 J 57 a 

 + 31 41 



54 53 38 A 



a + i> 



