WIND. 



The direction and force of the wind at Port Foulke was recorded bi-hourly 

 together with the observations of the temperature and pressure of the atmosphere. 

 The record, here presented, will therefore extend over eleven months. 



Dr. Hayes informed me that the direction of the wind was invariably recorded 

 with reference to the triie meridian. 



The scale of force adopted is the same as that used in the Kane expedition, viz., 

 from (calm) to 10 (hurricane) in accordance with Smeaton's table. 





Estimated number Pressure in pounds 



Velocity in st. 



Denomination of wind. 



of force. 



per square foot. 



miles per hour. 



Calm 







0.000 







Light air . 















1 



0.005 



1 



Gentle breeze 















2 



0.08 



4 



Moderate breeze 















3 



0.9 



13 



Fresh breeze 















4 



2.6 



23 



Strong breeze 















5 



5.1 



32 



Fresh gale. 















6 



■7.9 



40 



Strong gale 















T 



12 



50 



Storm 















8 



18 



60 



Tempest . 















9 



31 



80 



Hurricane . 















10 



49 



100 



The force of the wind was estimated by the observers. 



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