254 THE CANADIAN NATURALIST. [Sept. 



The intensity of the Sun's rays was also taken every fifteen 

 minutes — see Table 2— whicli also shows the reading of the 

 Barometer, and the temperature of the air, with the amount of 

 wind and clouds, as bearing more especially on the meteorological 

 efi'ects of the Eclipse. 



The wind was from the N. K., and veered occasionally to the 

 W. For the most part it was cilui. The clouds moved, during 

 the whole time, from the N. E. 



The weather, for some days previous to the 7th, was, for the 

 most part, cloudy, accompanied by showers of rain, with wind 

 from the S. W., and moderate, varying from five to ten miles 

 per hour. Rain fell on the fifth and sixth days. 



The Barometer, at 7 A. M. on the fifth day, stood at 29.811 

 inches ; it rose steadily until 7 a. m. on the morning of 

 the eighth day, and then stood at 30.141 inches : at 2 P. M. 

 of the seventh day it stood at 30.0.^4 inches, and at 4 P. M. 

 the reading was 30.010 ; from fifteen minutes after 4 until 

 7 P. M. there was a continuous fall ; it reached, at that hour, 

 29.900, and at 9 P. M. it again attained 30.110 inches. This 

 fall of the Barometer accords with the observations made on. the 

 partial eclipse of 1860, at the St. Martin's Observatory. 



The temperature of the air, at 7 A. M. of the seventh day, was 

 53^'9 ; at 2 P. M., 75^0, and at 9 P. M., 63^0. These were the 

 usual tri-daily observations. These observations, reduced as 

 a standard, from which the departure in decrease of temper- 

 ature is reduced, are given in Table 3, which shows the 

 mean daily curve, and the depression caused by the withdrawal of 

 the Solar heat. The Thermometer marked a constant and almost 

 uniform depression (which was, in a slight manner, interrupted by 

 the presence of clouds) from 5 P. M., when it stood at 70°0, and at 

 7 P. M., when it stood at 60''2, from whence it rose to 63^0 at 

 9 P. M. The decrease in the intensity of the Sun's rays showed 

 a like uniformity. 



The greatest degree of humidity occurred at thirty minutes 

 past 6, or about twenty-four seconds after the greatest obscura- 

 tion ; in like manner the increase of aqueous vapour, and the 

 other hygrometric states of tlie atmosphere, culminated at or near 

 that time. 



The wind, during the night of the fifth d ly, and up to noon of 

 the sixth, was from the N. by W. : mean velocity, 8.33 miles ; 

 maximum velocity, 13 miles per hour. There were three hours 



