456 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 228. 



DUPLICATE* OCTOBER 16th, 1854: MORNING. 



Lat. at lh., 33 16' N. : Lou. 177 28' W. 



Sun rose at 6A. 10m. 



Stronger and Diffuse Light at OA. 30- and l/i. Om. 

 Sun's Lon. 202 48'. 



Clouds and the nioou in the morning, since September 30th. Was on deck at ll h 30'", but clouds were in the way. 

 About 15 m after midnight the sky became clear, and was very bright and favorable; clear down to the horizon. The 

 Zodiacal Light could then be perceived, but it was very dim only a faint tinging of the sky. The boundaries of 

 the Diffuse Light were better marked than those of the Stronger Light. By 1 o'clock the latter were more decided, 

 and were quite reliable. I could get no reliable boundaries above the Milky Way. The moon, now approaching the 

 horizon, began soon after to give additional brightness within the limits marked as those of the Stronger Light. 



The moon showed itself on the horizon at l h 8" 1 . 







* I have called this " Duplicate IB/A," because, although this is properly Tuesday, 17th, we drop a day, and call it Monday 16/A, as yesterday, in order to 

 have our reckoning on arriving at home, as we >-hall find it there. It is customary with our ships, when circumnavigating the globe, thus to rectify their time 

 on crossing the 18Uth degree of longitude from Greenwich, by dropping a day (calliog two days one), if going eastward, and by adding a day, if iu the opposite 

 direction. 



