﻿ABSTRACT FOR THE MONTH OF APRIL, 1898. 



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



for and including 



THERMOMETER. 



BAROMETER. 



30 



103 



30 



041 



30 



114 







iq 



960 



29 



q57 



30 





30 



153 



30 



208 



30 



237 







2q 



7';6 



2C, 



678 



29 



63!i 



30 



203 







29 



764 





B64 



29 



q8q 



29 



937 



30 



ISO 



30 



290 



30 



37" 







29 



853 



30 



091 



29-747 

 ^9-«°3 



29.552 



29 598 

 29,892 

 29.880 



29.891 

 29-754 

 29-875 



tMean 

 of vapor. 



JMcan 

 relative 

 humid- 



S W. 



N.W. 

 S.E. 

 S.E. 



s.w. 

 s.w. 



S.E. 



N. 



14-58 

 17-75 

 13.21 



24 , ...Sunday 



nth. 



ANALYSIS OF WIND RECORD. 



Direction 



N. 



N.E- 



E. 



S E. 



S. S.W. 



W. 



N.W. 



Calm. 



Miles 



3904 



a25 



283 



519 



177 1 2049 



1504 



>337 





Duration in hrs.. 



255 



27 



44 



40 



20 



141 



10. 



8S 



7 



Mean velocity.... 



■S-31 



8.33 



6.43 



.2.98 



8.85 



14-53 



.4-89 



'5-73 





Greatest mileage in one hour was 30, on tiie Resultant mileage, 4,315. 



2Sth. Resultant direction, N. 44° W. 



Greatest velocity in gusts 42 miles per hour on Total mileage, 9,998. 



the 2.5th. Average velocity 13.89 m. p. h. 



* Barometer readings reduced to sea-level and 

 temperature 32° Fahrenheit. 



§ Observed . 



t Pressure of vapour in inches of mercury. 



I Humidity relalive, saturation being 100. 



IT 17 years only. « 12 years only. 



The greatest heat was 66°.6 on the 13th ; the 

 greatest cold wa* 14= . 1 on the 3rd, giving a 

 range of temperature of 52.5 degrees. 



Warmest day was the 13th. Coldest day was 

 the 3rd. Highest barometer reading was 30.370 on 

 the 27tli. Lowest barometer was 29.552 on the 16th 

 givingarange of 0-818 inches. Maximum relative 



humidity was 97 on the 20th. Minimum relative 

 humidity wasSO on the 28th. 



Rain fell on 6 days. 



Snow fell on 4 days. 



Rain or snow fell on 10 days. 



Auroras were observed on 2 nights. 



Lunar halo on 1 night. Lunar coronas on 5 

 nights. Solar halo on 1 day. 



