226 OBSERVATIONS ON THE ZODIACAL LIGHT, 



No. 113. 



JANUARY 31st, 1854: EVENING. 



Lat.'SG 30' N. : Lon. 127 45' E. 



Sun set 5A. 3^m. 

 Stronger Light'f-A. &c. : Diffuse Sh. and 9A. 



I was, at this time, on an exploratory tour over Loo Choo, but still made out to get good observations, and was 

 particularly watchful about the p ilsations of the Light. Moon set about 8 o'clock. For limits at 8 h and 9 h , see chart. 

 The pulsations appeared, and were as follows : At 8 h 3 m , the Stronger Light was at a, and dim ; at 8'' 5 m , at b, and 

 bright ; at 8" S m , at a, and dim ; 8" 12 m , at b, and bright ; 8" 15, at a, and dim ; 8" 19', at b, and bright ; and con- 

 tinued as at 8 1 ' 19 m till 8 h 22 m , when it began to ascend towards c, which it reached by 8 h 25'", and where it remained 

 permanently. At 9" it had this last (f) boundary, but had become considerably dimmed. 



