
304 REPORT—1852. 











TasLe VIII—Mean Monthly and Annual Barometrical Pressure, from ob- 
(corrected for 









1837. 1838. 1839. 1840. , 
Months. ———— SS eee 
9 a.m.|3 p.m. |Means.| 9 a.m. ! 3 p.m. |Means.| 9 a.m. | 3 p.m. |Means.| 9 A.M. | 3 P.M. |Mear 
jin. in. in. in. in. in. jin. in. in. in. in. in. | 
December ......|29°227 |29°245 |29°236 |29°349 |29°367 |29°358 |29-464 |29-452 |29-458 |29°123 |29°109 |29:] 
January ........- -402| °392| °397| °378| °376| °377|.-360} +127] -243/ ‘177; 034) <H 
February......... *366| °354] °360| °033! °035| -034| °375|] °387| ‘381| °337| °337) ‘Ss 
March............| °440| °414] °427| +220] -207| °214] +225) :240; -232| ‘715 “684 “65 
APTI! steneoreves> 279| +264) -271| °247| °199| -223] -517| °513| °515| °504| 464) -4 
May .cisooress..| °415}] °390 -402| °356| °339) °347| -409} -402} -405] °383) °359] °3 
June ..cce0s....| °469| °446| -457| °296| +281] +288] -383] 335] °359] °510} °502| ‘9 
JUlyy hecevtee.. -434| -408| -421| °399| -406} °402]- -273| -340| -306| -408 *394| “4 
August ..........) *406] °434) -420| 402) -321 *361| -414| +396] °405 | 494) °445| *4 
September ......| °362| °277] °319| °415| -434) *424|) +033) 028 030) +369) °319) * 
October .........) °574| °530] °552 |29-428 |29°383 |29-405| +425) -424| -424| °575| °552] ‘5 
November ......{29°275 |29°252 |29°263 ee 28-980 |28:831 |29°118 |29°100 |29°199 29°21) 29°137 |29°1) 



Annual Means 29:377 29:272|  * 29-322 29'3 

Diff. from Mean —-004 | —-109 —-059 
Taste IX.—Barometrical Pressure iu the several Seasons, with the Differ- 
ences from the Mean for 8 years, from 1837 to 1844 inclusive. 
Difference Difference Difference Difference 
Years. | Winter.| from Spring. from |Summer.} from |Autumn.| from 
Mean. Mean. Mean. Mean. 
| 



——$<$——= | —$—$—— | —_—. 


in. in. in. in, in. in. in. in. 
1837. | 29°331 —*029 | 29°367 —'046 | 29°422 +:'004 | 29°378 +:044 
1838. *256 —'104 261 —'152 *350 — ‘068 *220 —'114 
1839. 361 +:001 384 —029 Bia) —'065 "188 —'146 
1840. 186 —'174 “518 +:°105 "450 +032 “361 +027 
1841. “462 +102 “410 —'003 *430 +°012 232 — 102 
1842. "412 +:052 “431 +018 544 +°126 “401 +067 
1843. °340 —-020 *378 —*035 *455 +:037 *457 +123 
1844. | 29°531 +174 | 29558 +'145 | 29°339 —'078 | 29°434 +:100 
— | | | 2 | | | | | rrr 
Means...| 29°360 | ....- 7 Be I a Te 29°418 waded 29°334 

Mean of the 8 years 29°381. 


Means of the Seasons. Differences from Mean of 8 years. 
Winter............... 29°360 Winter.....seoss.0.0. "O21 
Spring ..t2--...00-... 29:413 Spring ........ see +7032 
Summer .........00- 29-418 Summer ......e00.-- +037 
