36 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 18. 



JDNE 29th, 1853: EVEMM.. 



Lat. 2G^> 10' N.: Lon. 127 42' E. 



Sun brt \\li. iil.Jni. 

 Stronger Liglit at 8A. 15m. Diffuw n.t S/i. 30m. 



8 30 



9 

 9 30 



10 (I Intense Light at 9/i. 



11 



Had a very good observation; sky very clear. Got two of the quartermasters, at 8 h 30 m , to draw the limits of 

 the Diffuse Light; they both agreed, and their ideas corresponded with ray own : these limits are given in the 

 chart; but the light defined was very dim, only a less depth "f color in the sky, and an inferior brightness of the 

 stars. At 9 h there was, within the Stronger Liglit, a more effulgent portion, which is bounded by the zigzag line 

 a a a. At IP 30 m , the ecliptic had sunk so near to the horizon that I could not get any boundaries, and the light 

 seemed to have nearly died away. At 10 h 30 m it was faint. 



