1858.] A Twenty-Fifth Memoir on the Law of Storms. 181 



Second Officer. — Gloomy with dark overhanging clouds, there 

 was no clear space in the zenith. 



No. 2. — Was there any remarkable light or darkness? Was the 

 sea luminous. If any light whence was it derived? 



Capt. Boon. — There was no remarkable light and the sea was not 

 particularly luminous. The night, previous to the lull, was very 

 dark, I may say the darkest night I ever experienced. 



Chief Offices. — The night was particularly dark. Daylight 

 was a long time breaking. No remarkable light ; sea not more 

 luminous than usual when breaking. 



Second Officer. — No particular light or darkness farther than 

 I have generally seen in bad weather. No luminous light observed. 



No. 3. — Was there any remarkable lightning during the lull. 

 Describe all the kinds of lightning carefully. 



Capt. Boon. — Flashes of distant sheet lightning at intervals, but 

 no thunder ; the lightning was very faint and had the appearance 

 of being a long way off; it came from all quarters of the compass. 



Chief Officer. — During the lull very faint long flashes of light- 

 ning (reflected light ?) No thunder heard. 



Second Officer. — Faint flashes at intervals. 



The Sea. 



No. 4. — When was the effervescence spoken of in the log first 

 noticed ? 



Capt. Boon. — During the lull, and lasted until the wind came 

 from the N. W. ; the sea was very confused, rising very high and 

 falling apparently with no progressive motion ; the Pluto laboured 

 less in the centre than she did in any other part of the Cyclone. 



Chief and Second Officers. — During the lull. 



No. 5. — Sow long did it last ? 



Capt. Boon. — About a quarter of an hour. 



Chief Officer. — Noticed during the lull. 



Second Officer. — About half an hour. 



No. 6. — What ivas it like ? Did it amount to frothing? 



Capt. Boon.— It was like boiling water ; it amounted to frothing ; 

 it had a white appearance but gave no sensible light. 



Chief Officer.— The rising and falling of water in a boilin" 



