178 ALLISON — ON THE METEOROLOGY OF HALIFAX. 



July was also below its normal temperature, and slightly above 

 its normal pressure. This month was cloudy and rather moist ; 

 with S. W. winds, the mean velocity of which dropped to the 

 lowest figure 4.87 per hour. 



The temperature of August scarcely varied from that of last 

 month. The normal heat of these months is also very close, August 

 being a little the cooler. But one thousandth of an inch separated 

 their pressures, and the precipitation was very nearly the same. 

 Wind, however ,^ got up in August as far as N. W., and the mean 

 of speed slightly increased. 



September was still cooler, relatively to its proper temperature, 

 but as yet no frost. Mean pressure was rising gradually. The 

 month had a fair amount of rain, but many bright days, and was 

 generally fine, without a gale. Winds prevailed from W. N. W., 

 and reached 8.46 miles as their average speed. 



October was comparatively the mildest month since March — 

 28^.3 being its minimum. Mean pressure was much the same as 

 in September. There was a deficiency of rain, and no snow. S. 

 W. winds generally; and an average velocity of 9.99 per hour. 

 The gale of the 12th deserves a separate notice. 



No month last year was so abnormal as November. It was 

 very cold : the mean being more than 5 degrees below nine Nov- 

 embers ; and thermometer fallinor to S^,2. The barometer stood 

 low; on one day touching 28.905. N. W. winds prevailed, and 

 their speed was frequently high, attaining a mean of 15.39 miles 

 per hour. Eain was light, but nearly compensated by the excess 

 of snow, of which we had 10 inches, or twice the normal fall. 



December remained cold, with a higher barometer, and 25 

 inches of snow, while but half the usual rain fall was measured. 

 Wind returned to W. N. W., and this last month was again more 

 quiet, giving an average velocity of 9.69 per hour. 



Summarizing 1871, we find a cold year — mean temjDerature 

 being 41°. 94 against a nine years normal of 43^.18. March and 

 October alone surpassed their normals in this element. Greatest 

 heat was attained in May, and least noted in January. The range 

 for the year was 100^.9. This is decidedly wider than usual. 



