dove’s tempeuature tables. 
273 
Temperature Tables, by Prof. W. II. Dove, Cor. Mem. of the British 
Association: with Introductory Remarks by Lieut.-Col. Edward 
Sabine, Genei'al Secretary. 
The following pages contain the numerical elements of an investigation on 
which Professor Dove has l>een employed for seveml years past; they con¬ 
sist of the mean temperatures of the different months of the year, of the sea¬ 
sons, and of the year itself, at above 800 stations on the surface of the globe, 
witli the differences between the sunmier and winter seasons, ami the hottest 
and coldest months, and a notice of tlie numher of years during which the 
obscrvaiionB have been contlnnetl in each ca‘>e, a.'id of the hours of observa¬ 
tion. The original memoir, in which thU a.ssemblagc of iho results of ob¬ 
servation will be embodied, Avill appear in the volume of the Transactions of 
the Berlin Academy of Sciences, which will be published in the course of 
1816; in that memoir llic tctnpfraiiire.'! will lie expressed in degrees of 
Ueaumuris scale, which is more commonly used in Germany than either 
Fahrenheit’s or the Centigrade; the transfonnntion of those into Fahrenheit’s 
scale, in which tliey appear in the suljjoinwl tables, is Professor Dove’s own 
work; a labour undcrlakeii jmd execoteil by him i'Xprest,ly for the conve¬ 
nience of the membrns of the Jlritish Association, and of those who profit by 
its publications. Whether wu roganl tins sacrifice of lime, on the part of a 
person who is undoubtedly in the fiivt rank of those who are advancing by the 
sure path of induction into hitherto uninvestigated ivgions of meteorological 
.science, simply as au evidetitro of his desire to promote the general advance¬ 
ment of science; or, as perhaps we may pennit ourselves to do, as an evi¬ 
dence of that general desire, or which ho has given so many jirpofs, strength¬ 
ened in this particular case by the recollection of the re.spoct and regard with 
which his presence was welcomed at the Cambridge njecting of the British 
Association in 1815,—wc arc bound, in cillier ruse, to exprpsti our acknow- 
hMlgements for a labour which certainly augmeoU greatly the value of the 
tables to British readers. 
'J'hc mean temperatures have not been corrected for the diurnal variation 
corresponding to tlie ))articular hour or hours at which the observations were 
made, excepting in a few instances, which are marked rod. (for reduced) in 
the column showing the hours of observation; but nine tables have been 
added, containing in degrees of Fabronheit the con-ectidna to tho true mean 
quantities for nine stations differing widely in geographical circumstances, 
computed by Bcisscl’s formula— 
r,=w-i-7/(8iHa'-|-U')+w"(sin 2x-i-lI")-|-«'"(9in3;r-|-U"'). 
The latitudes are south when tho sign — is prefixed, and north when there 
is no sign. Thu longitudes are east when — is prefixed, and west when 
there is no sign. The heigldH are in British feet. Where N.Y. occurs in 
the column showing the lujur of observation, it signifies that the results have 
been coJiiputcd by the formula 
Y _®+2i'+2c+a’ 
6 ’ 
in which a is the obsenation at 6 A at 3 p.m., c at one hour after sun¬ 
set, and a ' at 6 a.w. the following day. D. in the final column, signifies 
that the mean temfH'ratores of the several months at the stations so distin¬ 
guished, are taken from one or other of four memoire published by Professor 
Dove in the Transactions of the Berlin Academy, entitled ‘ Cber die nielit 
periodischen Anderungen der Temperaturverthcilung auf (ler Oberflacbe 
der Erde.’ The seasons arc the usual niebeorological seasons, winter con¬ 
sisting of December, January and Februarj-, and so forth. 
