DIURNAL INEQUALITIES. 



105 



tco 



+30 



+2O' 

 + IO' 



All days 



\ 



\ 



\ 



\ 



\ 



\ 



\ 



\ 



\ 



\ 



\ 



\ 



April 



o May 



o June 



O July 



o August 



10' 

 20' 



o September 



O 2 4 6 8 IO NOON 2 4 6 6 10 I2i0'r 

 Fig. 2. Declination. 

 P 



