238 § Meteorological Observations at Marietta, Ohio. 
December, 1828.—Ohio open all winter; some ice in February; 
“ 
ce 
n~ 
~ 
sé 
mean temperature 399-17 ; for year 559-22. Rain 49-50 inches. 
1829.—Ohio closed 27th January, 1830; mean for December 
44°-09; mean for the year 55°22. Rain 39-52 inches. 
1830.—Mean 35°-74; Ohio full of floating ice the 22d of the 
month ;-closed 23d January following, and opened the 20th 
February ; snow fifteen inches in January. Rain for year 
37°26. 
ruary was the great flood of 1832. 
* 1832.—Mean 36°; Ohio open all winter. Rain 48-33 inches. 
1833.—Mean 379-00; river open all winter. Mean 54°-56. 
1834.—Mean 36°-66 ; river closed 6th January, 1835; open 
again the last of the month; fruit all destroyed this year as 
in 1851, by frosts in May. Rain for year 34-66 inches. 
1835.—Mean 31°00; Ohio closed 28th January following; 
open the 15th February ; thermometer 18° on the Sth. Rain 
42-46 inches; mean for that year 50°65. 
1836.—Mean 30°:70; navigation obstructed from the 8th 
December, until the 8th of February. Rain 36-09 inches. 
“ 
7 
ee 
ci 
ce 
1837.—Mean 35°:57 ; navigation. obstructed from 30th Jan- 
uary to the 13th of March; February very cold; mean for 
year 519-5, 
1838.—Mean 28°-15; temperature 9 below zero the 31st of 
the month ; the river closed 6th December; opened the 13th 
: 
January. : 
1839.—Mean 36°33; Ohio closed the 29th ; opened the 15th 
1843.—Mean 35°-00; mean for year 50°-70; open all winter. 
1844.—Mean 349-37 ; rain for year 36-64 in. : open all winter. 
1845.—Mean 25°-40; at and below zero 2° on four day3; 
Ohio closed the 5th of the month; was open a few days and 
closed again the 26th. Rain 33-90 inches. 
1846.—Mean 37°77 ; Ohio open all winter. 
