MAY WEATHER. 



The fine weather promised at the end of last 

 month was but of short duration. Dull easterly 

 weather again set in on the 2nd till the 5th, when a 

 fall in the barometer was followed by a steady west 

 rain, and a still further fall on the 6th to 29-55 

 inches ushered in the cold strong showers with 

 snow on the hills, for which the rest of the month 

 was distinguished. There was fine bright sunny 

 weather and high barometer on Ilth, 12th, and 13th, 

 when a light easterly mizzle was driven back by 

 strong north westerly winds, that on the night of 

 the 16th culminated in a heavy downpour of 74 

 inches, and then a lower fall of the barometer on 

 19fch to 29-27 inches, was followed by intensely cold 

 south west snow storms, that lasted with little in- ' 

 termission till the end of the month, and reminded 

 us that we have a frigid zone in the south. On the 

 25th there were some slight traces of snow in the 

 valley, the hills around being white, and on the 

 mprnmg of the 26th the terrestrial radiation ther- 

 mometer registered the extreme cold for May of IS 

 degrees, the mean for the month 31-19 was the 

 coldest^May for the last 4 years, the mean tempera- 

 ture 46' -SO was also the lowest during that period. 



The rainfall was moderate, 1-60 inches against 

 •88 last May, making up 6-88 inches for this year, 

 to 5-84 inches to same time in 1876, 8-48 inches in 

 1875, and 7-12 inches in 1874. 



The movement of the wind was more than last 

 year, beiug 2350 miles to 2012 miles. 



The ozone 8-32, of scale 1-13, was remarkably 

 high, while the electrical disturbance as registered 

 by the gold leaf electrometer was almost nil, 

 W. E. SHOOBRIDGE, 



5th June, 1S77. Valleyfield, 



