0?i the Cold Term of January, 1859. 83 



- 19°9 " 



- 21°0 " 



- 21°6 " 



- 18°1 " 



- 19°4 " 



- 10°4 " 



- 5°0 " 



- 3°1 " 

 0°0 (Zero.) 



This table shows a period of 124 hours 30 minutes during 

 which the temperature was below zero — mercury froze in open 

 vessels; but the column of mercury in the tube of the thermo- 

 meter did not cease to contract at the lowest temperature — 43°6 

 (below zero) ; and Dr. Kane in his arctic voyages mentions the 

 fact that the mercurial column descended as low as — 44° ; and 

 Sir E. Belcher is said to have observed the mercurial thermometer 

 as low as — 46°. The mean temperature of Sunday the 9th, was 

 — 27°8; and of Monday the 10th— 29°0 ; and of Tuesday— 28°2 

 The barometer attained at 10 p.m. on Sunday the 9th the unusual 

 height of -30*614 inches, the mean velocity of the w r ind during the 

 day which was from the E. N. E. was 8*89 miles per hour. 



On the 10th the wind was from the S.W. by S., mean velocity 

 0-08 miles per hour. The Aurora Berealis was visible on the 

 nights of Sunday, Monday and Tuesday, but not attended with 

 any great display. 



The cold term ended by a fall of suow which commenced at 

 D-45 p.m. on the 12th, and ceased at 6-10 a.m. on the 13th day, 

 and amounted to 1*10 inches in depth. 



This cold term was felt generally throughout Canada and the 

 Eastern States, and seems to have travelled from the west, east- 

 ward. At Rochester the extreme cold was feltsome hours earlier 

 than at this place, which is 4° 15' west of this observatorv, and 

 398 feet higher above the Sea-level, there — 10° below zero was 

 the minimum temperature. At Brooklyn near New-York, it was 

 — 9°, and is the lowest temperature recorded there for the last 70 

 years. x\t Boston it reached — 14°, at Toronto — 38°, at Quebec 

 — 40° 1, at Huntingdon about 60 miles south of thisplace the mercu- 

 rial thermometer indicated — 44°, and mercury is said to have 

 been frozen quite hard in 15 minutes when exposed in a saucer. 



The Ozonometer indicated during the excessive cold but a mode- 

 rate degree, varying from 3 to 5 of Schonbein's scale. 



The electrical state of the atmosphere, indicated positive sio-ns 



