1869.] 



ECLIPSE OF THE SUN, 1869. 



255 



of calm. From noon of the sixth day till noon of the seventh the 

 wind was variable. It was due North, and calm, for forty- six 

 minutes. It then veered by the West to W. N. W. At 9.45 

 P. M. it was N.N.W., and, from 11 to 12, it attained a velocity of 

 19 miles: mean velocity, 11.11 miles per hour. There was one 

 hour calm from 12 noon to 1 P. M. At noon on the seventh day 

 the wind veered to the N. by E., and, from that time, to the 

 N. W. and N. E. by N. From 3 to 4 P. m. it was W. by S., 18 

 miles. During the Eclipse it was variable, from N. E. to 

 W. S. W. ; and it continued in that point until 11 P. M., when it 

 veered to N. by W. until daylight. It was calm from 12 to 1 ; 

 from 1 to 2 also calm; from 2 to 3, 2 miles; from 3 to 4, 18 

 miles ; from 4 to 5, 2 miles, and was calm during the rest of the 

 night. 



No flurries or gusts of wind occurred during the eclipse, and 

 no Aurora Borealis was seen. 



Observations on the Magnetic Elements were attended to. 

 The experiments on Vibration indicated nothing differing from 

 the usual appearances. The vibrations did not seem at all 

 aff'ected by the Eclipse. 



The Declination Magnet indicated a considerable variation in 

 Eastern declination, and this continued increasing up to the 

 seventeenth day. The Inclination Magnet showed a very slight 

 variation in the dip, but one of very small amount. 



Table 3. — Curve shelving the mean daily mean range of Temperature, and 

 its departure below, during the partial Eclipse of the Sun, Aug. 7, 1869. 



— Montreal Observatory. 



