88 REPORT—1843. 
“ September and December 1838. 
September 1838. (H.) 27. 37. December 1838. (H.) 27. 37. 
Western R. College... °144 *194 | Western R. College.. +293 °343 
Flushing ......... «, 165,/2192 ) Flushing. .... . ..<-.< 9 "185 203 
Gardiner (.... .. sugitligentfou | Burlington ........ “L7bghi6 
Gardiner «.. <j4)0\/-)e)1, SOWB LIS 
“ Table of the Mean Altitudes of Barometer. 






1836. | 1837. 1838. 
March.| June. | Sept. Dec. | March. | June. | Sept. Dec. || March. 
Montreal* .......+.... 29-694 |29-868 |29-946 29-951 |29-478 |30-070 |29-969 |'30-109 
Albany ........-eee0e+ 29-785 |29-894 |30-086 29°974 
William’s College ...|......... 29297 |29:322 | sss. 28795 |29-398 
Middletown .......+. 29°614 |29°641 |29-815 | ., — |l..veeeeee 29-250 |29-962 |29-634 ||29-875 
ING WOTIAVEN venecesctlicravenes|anesorect 307143 | 2S |... 29-584 |30°336 |......06 30°253 
Flushing ....essesseeees 29-658 |29:799 |30:136| 2S ||29°864 |29-606 [30-283 |29-969 | 30-183 
Deny OER este tcsscteanmences 29-974 |30°162 | 2H |].....-eeclecosesces 30°353 |30:069 ||30°247 
Baltimore ........0000}-eeceeees 29-710 Og 
Cincinnati ............ 29°267 |....0000 29300 | oF |leveeevee|eeeeteee|ereeesaselensersnes 29°389 
Western R, College..|.......0.|-seseseee|seseeeees ie | Geceereed pee pee 28°762 |28-799 
Gardiner, Maine......|..esesse-|esereeees SULOUE. irs clu aller oxdaast 29-455 30-258 |29-929 30:164 
MBGSUDIL Navencaeen tases dloscceess+|teevanaea| seer gees 30-203 |29-542 |30-360 |29-986 | 30-256 
RPOVIG ONCE NS. cckesncelitescttee lsc coogeerlsestrecesls - Allccsaseves|[sareecess 30°135 


March 1836.—Montreal, Albany, Flushing, Middletown, Cincinnati, 
Bahama, St. Catherine’s Island. 
(H.) Great contrast between the first mentioned four stations and the last. 
The curves of the former set all descend rapidly, the descent for Montreal 
being smooth, and undulated only by the very evident diurnal oscillations ; 
the others are all more or less irregular, but with no distinct correspondence 
in the features of their irregularity. The Cincinnati curve, on the other hand, 
ascends rapidly but smoothly, and the diurnal phases are distinctly seen in- 
denting its slope. In the Bahama curve the diurnal phases are extremely 
prominent; the sum of the greater excursions being 0°090 and of the lesser 
0-069, reckoned from a line of medium slope. At St. Catherine's Island a 
similar remark applies, the sums of the excursions from a medial line of de- 
scent being respectively 0:090 and 0:05]. 
(B.) In this series the variations of the barometer are evidently due to a 
storm; the four stations, Montreal to Middletown, being nearly on the same 
meridian. The rising curve at Cincinnati doubtless arises from the western 
half of the storm passing over that station, while the eastern traversed the 
meridian of Albany. The Bahamas were entirely removed from its influence. 
The increase of oscillation in this case, or rather the decrease of oscillation 
from a central point of greatest oscillation, arises from the depression towards 
the centre of a rotatory storm. 
June 1836.—Quebec, Montreal, William’s College, Albany, Middletown, 
Flushing, New York, Baltimore, Bahama. 
(H.) The curves for Quebec and New York are extremely remarkable for 
the perfect smoothness of their gentle upward slope, unbroken by any undu- 
lation whatever. Those of William’s College, and especially Albany, on the 
contrary, are abruptly agitated, and the swells and falls coincide with the 
* At Quebec, owing to the observations being for the most part at intervals of 4 hours, the 
means are not comparable with them. 
Ce ees 
Sissy 
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