1849.] Eighteenth Memoir on the Law of Storms. 837 



side of the moon. The red colour extended over all, but was in patches 

 deeper in some parts than in others, and that some clouds facing the 

 moon were of a deep orange red, and that occurring at night it was 

 the more particularly remarked. 



The lightning of the 1 2th he compares both to the flashes of a gun, 

 and, at times, to sparks as if from a flint and steel. Altogether a most 

 remarkable kind of lightning. Very little lightning during the strength 

 of the Cyclone — not more than three or four times altogether. 



The vibration of the Barometer and Simpiesometer was noticed for 

 about two days, on one occasion it amounted to 0.4 (four tenths) in three 

 hours. At 7 a. m. on this day they shook out reefs, for the Bar. had 

 risen to 29.65 ; and at noon it was again at 29.20, and then rose again 

 before finally falling ! 



Abstract Log of the Ship Wellesley, Capt. F. Arrow, (No. 8 on 

 the Chart) from Madras to Calcutta. Civil Time. 



10th October, 1848.— In Lat. 13° 40' N.; Long. 83° 45' E. ; at noon breeze 

 N. N. W. 



11th Oct.— In Lat. 15° 15' N. ; Long. 86° 8' East; at noon breeze N. 

 W. to W. b. N. with dark lurid appearance to the Eastward, getting more dense, 

 and a hot stifling feeling; towards noon clouds flying in dark rugged masses to the 

 westward ; upper strata in ridges from the East, sun obscure with red glare on 

 the horizon to W. and S. W. looking like sunset in the middle of the day ; 

 shortened sail to prevent nearing it.* Afternoon arched squalls from the N. 

 E. rose, with vivid lightning ; 7 p.m. looking finer ; made sail. 



12th Oct.— Lat 16° 20' N. ; Long. 87°00'E.; Bar. 29.60, Simp. 29.08 ; 

 Ther. 83° ; looking very threatening from the northward at daylight and all the 

 lurid appearance of yesterday ; double reefed and reefed the courses ; wind West ; 

 gusty and increasing with sheets of rain at times. 3 p. M. wind West; still more 

 threatening and increasing to a gale ; furled every thing and hove to under main 

 staysail and trysail. 8 p. m. sent top gallant yards down ; blowing a heavy gale 

 from the westward with torrents of rain; 8 p. m. Bar. 29.50; Simp. 29,00 ; vivid 

 lightning and peals of thunder all round and close over the ship, the rain was the 

 most tremendous I ever saw, and the squalls most furious. Midnight wind com- 

 menced veering to S. W. 



13th Oct.— -Lat. 16° 53' N. ; Long. 88° 2' E.; 7 a. m. wind S. W. to S. S. 

 W. bore up E. N. E. to get clear of the Cyclone ; under close reefed topsails and 

 reefed foresail; heavy confused sea from all quarters since midnight. Noon wind 

 * The Cyclone of which Capt. Arrow was fully aware. 



