fi36 Res^iiUs of our Meteorological Tahlei 



of the external air in the interior of London, the mean tem- 

 perature here last year, and the difference between the mean 

 at 8 and half-past 8 o'clock A.M., the mean of Mr. Gary's 

 thermometer, as given in the table at 8 A.M., appears to be 

 about one degree too low : I should therefore like to know in 

 what situation he placed his external thermometer, or whether 

 he registered from the one attached to his barometer within- 

 doors. 



The annual average temperature of Mr. Veall's thermo- 

 meter is about 2f degrees lower than mine at half-past 8 A.M., 

 which is as it should be, considering the greater north lati- 

 tude of Boston, and the localities of that place and Gosport in 

 respect to their contiguity to the sea, which has been found 

 by long experience to modify the chilly air in winter, and keep 

 down the excessive heat in summer. 



The difference between the mean temperature of the ex- 

 ternal air here this 3'ear, by a good horizontal self-registering 

 day and night thermometer, and the mean at half-past 8 

 o'clock A.M. by a Fahrenheit's, is f iths of a degree : the mean 

 temperature of the external air at Boston for IBS^ may there- 

 fore be taken at 49"f, that is 2°J less than the mean of this 

 place. And for the last eight years of Mr. Veall's registering, 

 the mean temperature of the air at Boston may be taken at 

 4<9°^, that is one degree below the mean temperature of Lon- 

 don for a series of years. 



Lastly, it may be seen by the table that the annual amount 

 of rain caught at Gosport differs considerably from either that 

 caught in London or at Boston. Gosjiort being on the south- 

 west side of Portsmouth harbour, at the extremit}' of the 

 southern coast of Hampshire, it tlierefore receives the full 

 fbi'ce of the W. and S.W. winds from the Atlantic Ocean, 

 whichj on an average of ten years' observations made here 

 three times every 24 hours, prevail nearly four months out of 

 the year, according to the follow ing scale of the winds for that 

 purpose. 



A Scale of the JVindsfor 10 Years, ending -wilh 1824. 



N. iN.E.; E. S.E. S. S.W. W. N.W, 



J326|[39li{370i|3Q5J353i649i;716l^540^ 



Days. 



3653 



It further ajipears from this scale, that by rejecting the 



winds liom the North and South points, whirh are almost 



equal in duration to each other, the winds Irom ihe West side 



of our meridian have prevailed 1906^ days, and only 1067^ 



. • from 



