TRANSACTIONS OF THE SECTIONS. 19 

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from 9 A.M., 3 P.M. and 9 p.m. to 7 and 11 a.m., 3, 7 and 10 P.m., in accordance 
with the suggestion of Professor Hansteen of Christiania. 
The present observations are the last of a set of eleven years, and Mr. Grewe has 
formed a very interesting table of the results of the barometer and thermometer for 
that time; some of these results I have reduced into English scales, as per tables 
annexed. 
From the table of the results of the observations on the barometer for the eleven 
years ending 30th September 1848, it will be perceived that the means of the 9 p.m. 
observations are higher than those of 9 a.m. and 3 p.m., except in November and 
December, when the 3 p.m. are a trifle the highest. 
The observations fall from 9 a.m. to 3 P.m., and then rise to 9 p.m. The monthly 
means fall from May to June and July, and rise to August, then fall to September, 
October, November and December, and rise to January, then fall to the lowest mean 
in February, and rise to March and April, reaching the highest mean in May. 
During the eleven years the month of May gives the highest monthly mean, and 
the month of February the lowest. 
The mean of the monthly means for May and February (being the highest and 
lowest) differs from that of the eleven years by only 0°017615 inch; but of the 
monthly means, the one for March comes nearest to that of the eleven years, differ- 
ing by only 0:00079 inch. 
Of the seasons, the mean for Spring is the highest and Autumn the lowest. The means 
fall from Spring to Summer and Autumn, and rise from Autumn to Winter and Spring. 
From the tables of the results of the observations on the thermometer for the 
eleven years ending 30th September 1848, it will be found that the means of the 
9 p.m. observations are lower than the 9 a.m. and 3 P.M. without exception. Of the 
eleven years, the month of February is the coldest, and August the warmest. 
The monthly means of the observations rise from March to August, both inclusive, 
and from September to February, also both inclusive. 
The monthly means rise thus :— 
, 
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+ 

° 
From February to March, Fahrenheit.......... PA Ch see 5°336 
From March to April, Fahrenheit ...... es cahadains sgedes dered 9°536 
From April to May, Fahrenheit ...csc.1..scscseeeeessenseens 9°396 
From May to June, Fahrenheit ..... sGob MRCS ms deacons ocd 8°807 
From June to July, Fahrenheit ............ sascecardececasess 6°651 
From July to August, Fahrenheit .......scsssecessceesenes . 0°254 
Total rise..e.scesesesesseseees 39°980 
They then fall— 5 
From August to September, Fahrenheit .......... sc.deatnass L721 
From September to October, Fahrenheit ...........+...008 12°522 
From October to November, Fahrenheit.........ccecesseceee 7°873 
From November to December, Fahrenheit ..........+ssseee 2°855 
From December to January, Fahrenheit............+++ seams 37368 
From January to February, Fahrenheit ..............+.04 + 2°641 
Wotal fares isisesceccece css 39°980 
It will be noticed from the foregoing, that the monthly means rise rapidly from 
‘March to June, and fall heavily from August to November. 
The mean of the monthly means for August and February being the highest 
and lowest, differs from that of the eleven years by only 1°°594 Fahrenheit. 
The nearest monthly mean to that of the eleven years is October, differing from 
‘it by only 1°°659 Fahrenheit ; this agrees with the result generally noticed by me- 
teorologists. 
_ The means of the seasons :— 3 
, Fall from Summer to Autumn ...... at eae 25°785 Fahrenheit 
Fall from Autumn to Winter .............00000 7°879 a 
And rise from Winter to Spring ......... seseee 23°413 as 
“a And rise from Spring to Summer.......... coese 12°251 os 
va) I remain, Sir. 
Your obedient humble Servant, 
fey (Signed) Joun Francis Cote. 
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