Reduction of Meteorological Tables in the Doah. 415 



The Minimum of the month of September approaches most nearly 

 to that of the whole year, differing, however, from it by + 2°, and the 

 Mean of the same month is also the nearest approximation to the Mean 

 of the year, exhibiting a difference of +1.702. The month of October 

 shews a Maximum that differs only 0.75° from the Annual Maximum. 

 The Mean of the Columns of Maxima and Minima is 74.875°, thus 

 exceeding the Annual Mean by 0.077°. The highest range of the 

 Thermometer shewn in 1837 was 94°, the lowest 58°, giving a differ- 

 ence of 36° for the extreme Annual range of the instruments. 



TABLE II. 



Shewing Thermometric Results for the year 1838. 



Months. 



January, . , 



February, . , 



March, . . 



April, 



May, 



June, 



July, 



August, . . 

 September, 

 October, . 

 November, 

 December, 



Min. 



56. 

 58. 

 58. 

 74. 

 72. 

 87. 

 77. 

 77. 

 76. 

 68. 

 61. 

 57. 



Mean. 



58.26 

 61.03 

 62.61 

 77.73 

 82.19 

 90.47 

 81.80 

 79.25 

 77-86 

 71.16 

 64.33 

 59.22 



Max. 



Sums. 



821. 



Means. 68.41 



865 91 



60. 

 64. 

 76. 



82. 

 86. 

 92. 

 89. 

 82. 

 80. 

 76. 

 68. 

 62. 



917. 



25th 

 1st 

 3d 

 4th 

 6th 

 28th 

 14th 

 10th 

 27th 

 28th 

 22d 

 10th 



Epochs . 



O O) 



5th 

 15th 

 20th 

 14th 

 9th 

 1st 

 4th 

 8th 

 1st 

 14th 

 9th 

 9th 



O 



1st 

 20th 

 3lst 

 29th 

 19th 

 6th 

 2d 

 2d 

 3d 

 4th 

 1st 

 1st 



72.16 76.41 ' 



Whence it appears that the Mean Annual Temperature at Kulsea 

 during the year 1838, approximated very closely to that of the month 

 of October, since 



Min. of Oct. 68.00 Mean of Oct, 71.16 Max. of Oct. 76.00 

 Min. of 1838, 68.41 Mean of 1838, 72.16 Max. of 1838, 76.41 



Difference, — 0.41 



1.00 



0. 41 



