38 REPORT—1850. 
as will be seen in the present series, the means of the months of April and May 
differ by only 0°00811 inch. 
Of the seasons in this new series, the mean for Spring is the highest and Winter 
the lowest, while Autumn and Summer are nearly equal. The quarterly results show 
that The barometer rises from Winter to Spring 0°39657 inch. 
And falls from Spring to Summer......... τς 0°13838 
Also falls from Summer to Autumn......... 0°00528 
And again falls from Autumn to Winter... 0°25291 
In the series referred to for eleven years, Spring gives the highest mean and Autumn 
the lowest. 
Of the monthly observations in the new series, the greatest range takes place in 
March, being 1°92086 inch, whilst the least oscillation occurs in September, being 
0°71378 inch. 
The highest observed point for the year is 1848, December 19th, at 
ΠΕ ΕΞ ΟΦ seesyeeee 30°58419 inch. 
And the lowest observed point is 1849, January 18th, 7 P.M. ,..... 28°45585 
The difference between these two points iS ....,.eseeeereeees Vesnsguc dere 2°12834 ... 
which is therefore the greatest observed oscillation of the barometer for the year. 
The difference between the mean of the year and the highest observed point for 
the same period is 0°92086 inch, and the difference between the mean of the year 
and the lowest observed point also for the same period is 1*20748 inch. 
The result of the eleven previous years’ observations on the barometer gives a 
yearly mean of 29°75490, this year it only reaches 29°66333. 
Thermometer.—The results of the observations on the thermometer in this new 
series present a very peculiar feature, the mean for the year of the 11 a.m. observa- 
tions being actually the highest, and differing from the 3 p.m. by 05.166 Fahr. 
The yearly means show that the thermometer rises from 7 a.m. to 11 a.m, 2831 Ε i 
And falls from 11 A.M. £0 3 P.M. o...-:.cgesrcesesegsenccessesscgsseegoeseseseqerss 0°156.., 
Also falls, ποτ ΘΝ LO 7 Pei | scseetaesteatyuecscnecaccaceeeqesss (uaa ΚΡ ἘΣ ἀντ UMS are 
And again falls from 7 P.M. to LO P.M. ...,..ecececsegseceueseeees esasguavetatend 1°876... 
The 7 a.m. and 7 p.m. means for the year differ from one another by only 0°-007 
Fahr., the 7a.m. being that much the highest. The means for these hours, viz, 
7 A.M. and 7 P.M., are nearest the mean of the year; and of the monthly means, 
those for October and April come nearest the mean of the year. 
The mean for July being 59°:707 is the highest monthly mean, while that for Ja- 
nuary being 7°-268 is the lowest. 
ο 
The quarterly means rise from Winter to Spring ... 22°981 Fahr. 
And rise from Spring to Summer ....--.......0000- ... 13:746 
Then fall from Summer to Autumn ............44. eve 31:188 
And again fall from Autumn to Winter .........+0+... 5°589 
The result of the eleven previous years’ observations on the thermometer gives a 
yearly mean of 34°°273 Fahr., but the mean this year only reaches 32932 Fahr., 
showing it to have been somewhat colder. 
The maximum for the year was registered 1849, July 17th, at 3 p.m. 86-90 Fahr. 
And the minimum, 1849, January 14th, at 3P.M. ..0{ννονεννονενν ον ον «— 20°20 
Making a total range for the year Of ...sccrscccseqecccesscegececevenscscees 107°10 
, The difference between the mean of the year and the maximum for the same pe- 
ταν is 532°°-968 Fahr., and between the mean of the year and the minimum 589:133 
- 
With reference to the thermometer falling to —20°-20 Fahr., as has just been 
remarked, allow me to state, that I well remember at such low temperatures the 
instruments almost sticking to my gloves from the cold, as also the peculiar erack- 
ane sound when walking over the snow, and the beautifully clear and bespangled 
sky. 
I remain, Sir, your most obedient Servant, 
John Lee, Esq., LL.D. §c. &c. J. F. Coxe, 
