Ixviii Meteorological Register. 



[liemarkahle Phenomena continued from page lix.] 

 January 29th. Parhelion around the sun this afternoon, consisting of a halo circumscrib- 

 Ing the sun, in the circumference of which appeared the mock suns, and in a horizontal line 

 with the sun. The diameter of the halo was observed to be 45° 20'. To the N. E. of the sun 

 there also appeared a luminous arch inverted, or having its convex part towards the sun, 

 and its extremities directed from it. It was about 60° of a circle of a smaller periphery than 

 the halo, and well defined. The part nearest the sun was found to be 48° 17' distant from 

 that luminary, so that it did not come in contact with the halo, but the points of their near- 

 est approach were 25° 37' apart. The halo was indistinct, except in the vicinity of the mock 

 suns, where it was well defined. Time of making observations half past three o'clock, P. M. 

 Thermometer at the same time 5°, Barometer 28.88, atmosphere hazy, thin light clouds about 

 sun, fresh N. W. wind. 



This evening soon after the moon rose, there being a thick haze or mist in the atmosphere 

 about her, there appeared two luminous cones of a reddish cast, whose bases coincided with 

 the moon's disc ; the one extending with its vertex above the moon directed towards the 

 2enith, and the other with its vertex below her approaching the horizon. At six o'clock the 

 paraselene appeared complete, consisting of the halo of the same diameter as that around the 

 sun this afternoon, the mock moons or images, and the inverted arch to the S. W. of the 

 moon, and of the same size and distance from the moon as that which appeared with the 

 parhelion above mentioned. From each mock moon there projected a cone of light, whose 

 vertices were directed from the moon. Soon after these appeared two more cones issuing 

 from the moon, one on each side of her in a horizontal direction. The length of the one pro- 

 jecting downwards was 8° 40'; that of the other three 2° 30', they being equal in length. 

 Thermometer when the observations on the moon were made stood at 5°, Barometer 29.00, 

 fresh N. W. breeze, atmosphere hazy, no clouds visible about moon. 



January 3 1st. Parhelion around the sun this morning, consisting of the mock suns only, 

 which appeared soon after sunrise, the distance between them measured 44° 30' 

 , On the 12th the ice in the river was found to be 28 inches thick. Very little current where 

 the measurement was made. 



