ABSTRACT FOR THE MONTH OF MAY, 1890. 



Meteorological Observations, McGill College Observatory, Montreal, Canada, Height above sea level, 187 feet. C. H. McLEOD, Superintendent. 



THERMOMETER. 



Mean. Mas. M 



& 54.58 63.70 



35-7 



21 



5°-3 

 46* 

 45-6 

 39.6 



15 



37.6 

 51-3 



383 

 48.2 

 46.5 

 51-4 



15 

 16 



534 



*9 



50. 9 



'5 



45 5 

 40-5 

 4S.4 



19 



♦BAROMETER. 



29 &55S 



3°. '855 

 30. 2680 



29.980s 

 29.8517 

 2 9 ■ 90S3 



30. 143 

 29.925 



29.668 

 29-739 



29.862 



s.w. 



s.w. 

 s.w. 



(icrhour 



ccluding this month. 



ANALYSIS OF WIND RECORD. 



duration in lira 

 Mean velooity . 



N.E. | E. 



. .. vu u. , cl in; in h[ | r , r v,;i> -i„iin me III 



th ml ty '" eustsfc6 milos P er h° ur 



s.w. 



w. 



N. W. 



3560 



"55 



454 



222 



82 



4- 



16.0 



14. 1 



"•■ 



Resultant mileage, 2,842. 



the 5th and 6th. Mil 



t Pressure of vapour in inches of mercury. 



t Humidity relative, saturation being 100. 



fl Nine years only. 



The greatest heat was 74-1 on the 31st; the 

 greatest cold was 28.3 on the 2nd. giving a 

 range ..r l--wp<?rai lire «<t i?>->> degrees. Warmest 

 l.j v was Lbe'-">tb. Coldest day was (be 1st. Highest 

 barometer reading was 30.311 on the 22nd; lowest 

 l..ir..m.-trr wa- 2'J "^ uu the otli. Hiving a range of 



the 11th. 

 Rain fell on 18 days. 

 Solar halos on 2 days. 

 Lunar halo on 1 night. 

 Fog on 3 days. 

 Thunder on 2 days. 

 The month was characterized by beii 



i relative humidity 



0-753 inohes. Mai 



relative humidity i 



