474 METEOROLOGICAL REPORT, 1871, BY THE 



Highest reading, 61° on the 1st ; lowest, 19° on the 19th. 



Mean of wet bulb, 34-15°; of dry bulb, 35*83°; difference, 

 1-68°. 



Fall — Eain, 2-11 inches ; greatest fall, 0*42 inch on the 26th; 

 days of fall, sixteen. 



River Tyne at Wylam Bridge — Mean height, 2-4 feet ; high- 

 est, 4-5 feet on the 15th. 



Wind— N., 18° W. 



Seahani Harbour. — The lowest barometrical pressure recorded 

 was 29*32 on the 8th, and the highest 30-24 on the 19th ; on the 

 20th, 21st, and 22nd it fell 0*50, and rose again to the same 

 level between 9 a.m. and 6 p.m. each day. The lowest tempera- 

 ture recorded was 23° on the 18th, and the highest 52° on the 

 6th — generally a very cold month. 



On the evening of the 2nd, at 7.30 p.m., a brilliant Aurora was 

 seen; on the 4th, at 8.20 a.m., a Solar Rainbow was seen; on 

 the 9th, after a very fine, clear day, a splendid double Auroral 

 arch was seen, one stretcting from N.E. to N.W. and the other 

 from N.E. to S.W. After this four days of sharp frost. On the 

 16th a light covering of snow at night ; the 30th very stormy 

 and a very high sea. 



Solar Halos were seen at Wallington on the 13th ; at Sun- 

 derland on the 10th and 13th. Lunar Halos were seen at 

 Wallington on the 1st, 4th, 19th, 23rd, 27th, 28th, and 29th ; 

 at Allenheads on the 23rd ; at Sunderland on the 23rd. Light- 

 ning was seen, but Thunder was not heard, at Saughtree on the 

 8th ; at Wallington on the 10th. Hail fell at North Sunderland 

 on the 30th ; at Wallington on the 29th ; at Cresswell on the 

 27th ; at Meldon on the 27th and 29th ; at Acklam on the 8th. 

 Snow fell at Saughtree on the 8th, 16th, 21st, 29th, and 30th ; 

 at North Sunderland on the 29th and 30th ; at Wallington on 

 the 10th, 21st, 22nd, and 30th ; at Cresswell on the 10th, 17th, 

 20th, 21st, 22nd, and 23rd ; at Meldon on the 10th, 16th, 21st, 

 22nd, and 29th ; at Whitley on the 18th, 28th, and 30th ; at 

 Sunderland on the 16th ; at Greta Bridge on the 17th ; at Acklam 

 on the 8th. Aurora Boreales were seen at North Sunderland 



