DIURNAL INEQUALITIES. 



11.1 



+20 



+ 10 



+30 



+20 

 + IO 



+2O 



\ 



\ 



\ 



\ 



\ 



\ 



\ 



o Midwinter 



o Equinox 



o Midsummei 



o Year 



20 



02-^6 8 IO NOCm z 4 6 8 10 IZMIO'T 

 Fig. 10. Horizontal Force. (Unit ly.) 



