OBSERVATIONS ON THE ZODIACAL LIGHT. 



135 



l d 7-r-T-/l' J r-rn-^l'-V-r-T-T L l4-r-i-r / l' / , , , , I^VTT^Vi-T^I Jj riW|- / i-rW< : -T-r'K lVr-.---|4^ i ?(', 



