Miscellaneous Intelligence. 143 
. On the periodic and non-periodic eo heb of Temperaiure at 
aba in Canada from 1841 to 1852 inclusive ; by Colonel Epwarp 
Sasine, R.A., Treasurer and Vice-President of ne e Royal Society, (Phil. 
Mag., [4], Vv, '376. )--The principal object of this communication is to 
make known the non-periodic variations of temper peti ‘i every day 
in the twelve years, from 1841 to 1852 inclusive, at Toronto in Cana- 
da. The non- ponies variations are those differences of the tempera- 
ture from its mean or normal state which remain after all the known 
periodical variations are allowed for, and are such as are generally ac- 
for a sufficient time to afford a proper basis for inductive generalisation. 
Toronto, from its latitude 43° 40’ N. and inland situation, is ae suite 
to supply such a comparison with stations in the middle parts of Eu- 
rope where similar records have been kept; and the tw ira years em- 
braced by the observations, viz. : its o 1852, have been years of un- 
usual meteorological activity in Euro 
Details are given in the co see a of the paper showing the 
care bestowed on the examination of the thermometer employed, with 
a standard divided “ @ Té échelle arbitraire,” by the method of M. Reg- 
on-commissioned officers of the detachment of the Royal Artillery 
oneness in the duties of the observatory. ad oe 
he period of twelve years comprises two series, In one of which 
the thermometer was observed hourly, and in the other less frequently, 
each observation in the second series receiving however a correction to 
the mean temperature of the day furnished for every hour and every 
day of ae year by the pie te eps The two series, each of six years, 
from the mean monthly bene by the method suggested by Bes- 
sel (Astron. Nach. No. 186), whereby the most probable values of the 
temperature, on every day and every hour, are computed correspond- 
ing to the whole body of the observations. These the author regards 
as ppl normal oiets and ove com paring with them the actual 
having been corrected for the hour in oo manner ad »—the non- 
periodic variations for every day in the year are obtained and are given 
ina pic e. 
om the approximate normal temperatures the author bas, syogeea 
ed in a plate the phenomena of the tempeaniare at T 
