a 
316 Results of our Meteorological Tables for 1825. 
In order to obtain the correct mean annual results of the 
barometers, thermometers, and depths of rain at Gosport, in 
London, and at Boston for this table, I recalculated the tables 
at the end of the Numbers of the Philosophical Magazine and 
Journal for 1825. 
I shall here notice by the way of Errata, that Mr. Veall’s 
barometer appears too low by 45-100dths of an inch on the 
11th of May, and on the 16th of that month 5-10ths of an inch 
too low*, Again, on the 26th of November, Mr. J. Cary’s 
barometer is too high by 6-10ths of an inch. ‘These errors 
I have corrected in the monthly mean pressures in the table, 
as on comparison it will be readily discovered that they are 
errors by some means or other. 
The mean annual heights of the barometers in the table at 
the different stations this year, will be found much higher 
than they were last year, particularly at Gosport and in Lon- 
don: and the mean annuai temperatures of the external air 
are more than a degree higher. ‘The aggregate depth of rain 
at each place is nearly one-third less this year than last. Iam 
much disappointed at the discontinuation of the use of the 
pluviameter in London; but by the way of making the table 
complete, I have substituted the depth of rain that fell there 
in November and December by approximation. As the va- 
rieties of weather, and the heights of barometers very much 
depend on the position of the prevailing winds, as well as on 
the vicissitudes of the seasons, I think it necessary to notice 
some peculiarities in their position at Boston and Gosport. 
The winds from the North-east and East frequently travel 
over the Russian empire, Denmark, &c., and those from the 
South-east over part of Asia, Turkey, Hungary, and Germany 
before they arrive at Boston; and in these directions overland 
they become drier than the opposite winds which travel over 
a great extent of sea: hence it is that the pressure at Boston 
is comparatively greater with these winds than with those from 
opposite points of the compass. 
In comparing the position of the winds as registered at these 
places, they will seldom be found to blow simultaneously from 
the same point, and their directions are very often four, some- 
times eight points different, and not unfrequently in opposite 
directions. The difference in their directions at the same time 
of registering, no doubt arises chiefly from the different lati- 
tudes of these places, as it respects a tract of land upwards of 
two degrees in extent between them; and the South-west and 
West winds, which are so prevalent here from the Atlantic 
* We have just learnt, however, that Mr.Veall finds these heights to be 
correct, according to his journal.—Eprr. 
Ocean, 
