2. On a Necessary Correction in the Height of the Barometer depending on the Force of the Wind

During the frequent violent gales of last autumn, the author had remarked the excessive fluctuation of the barometer; and following up this phenomenon by means of the portable aneroid barometer, he found that not only was this fluctuation dependent on the wind and on the barometer being in a screened position; but that accompanying the fluctuation was a constant depression increasing in amount with the velocity of the air, and that this depression amounted in strong gales to a larger quantity than all the other usual corrections applied to a barometrical reading; and must be applicable to all the ordinary positions where barometers are observed, whether by sea or land.