240 



OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 120. 



FEBRUARY 



li, l-:,t: EVEMNG. 



Lat. 35 l!i' X. : L.m. 13?, 43' E. 

 Sun Ret &/( 42 vi. 



( 7/i. liw i 



Stronger Light < 7 10 > DilFuse at T/i. 

 (7 16 ) 



Some clouds along the western horizon ; but, at Y\ ^nt li inn 1 ivies ns in the chart ; the boundaries, however, not 

 very distinct. Began soon a'U-r to oli.-L'rve pulsations ; but as tliese rt';|iiire a ^nn,l sky in order ti) be taken reliably, 

 and the clouds broke the view, I soon <jave u;> the efForf. It, w:n evident, however, that the pulsations were goinsj 

 on, both in the extent and in the brightness of the Z idi.icil Srroii^rr Li^lit. At 7' 1 10" and 7 !l 1R'", the Light was 

 as in the chart. At 7 1 ' If!'" it had just lirighirnrd an 1 risen ; luit I cmil 1 get nothing reliable below. At 8^ the 

 clouds had covered all the sky ; and so they remained during the rest of the night. 



