Fig. I 



EAST. 



Fig. 2 



PLATE I. 



Y;^ PERIHELION. 



AUTUMNAL EQUINOX. 



PERIHELION. 



AUTUMNAL EQUINOX. 



APHELION. 



4/ 



APHELION. 



O 



^H VERNAL EQUINOX. 



10 



Q \ 



^W PERHELION. 



V^EST. 



rs 



VERNAL EQUINOX. 



PERIHELION. 



