426 



APPENDIX. 



the fact of its being adapted to the purposes of a profitable 

 agriculture.* 



Council Bluffs 



Wooster 



Zanesville 



Marietta 



Chillicothe 



Cincinnati 



JefFersouville 



Shawneetown 



Huntsville 



Tuscaloosa 



Cahaba 



Ouachita 



New Orleans 



Portsmouth, N 



H. 



Washington City 



Mean temperature 

 of the mouth. 



. 17.89° 



. 16.G9 



. 25.84 



. 28.42 



. 32.48 



. 28.76 



. 23.05 



. 32.91 



. 36.43 



. 46.63 



. 65.87 



. 34.16 



. 52.16 



. 19.31 



. 29.19 



Highest. 



36° 



36 



42 



45 



48 



46 



50 



52 



62 



74 



73 



68 



78 



40 



45 



Lowest. 



22° 

 zero 

 zero 

 zero 



10 



11 

 6 

 8 



12 



17 



54 



10 



25 



4t 

 4 



Council Bluffs, lat. 41° 45^ long. 19° 50^ W. of the capitol. 

 New Orleans, " 29 57 " 12 53 W. " 



Portsmouth, " 48 05 " 6 10 E. " 



Difference of lat. 13° 48'. Difference of long. 26°. 



Nor does it appear that the same quantity of snow falls in the 

 Missouri Valley which is common east of the Alleghany Mount- 

 ains. At the Council Bluffs, on the last of January, snow was 

 but twelve inches deep; at the same period, it was three feet or 

 more throughout the Eastern States. 



A snow-storm fell over the middle and eastern latitudes of the 

 United States, for the first time, during the autumn of the year 

 (1820), in the first half of November. As a precursor to this, 

 slight drifts and gusts of snow had showed themselves at Albany 

 on the 25th, 26th, and 28th of October.:]: 



* In Europe, the mean annual temperature necessary for the production of cer- 

 tain plants is — 



For the sugar-cane 67° 



" coffee ....... 64 



" orange ....... 63 



" olive 54 



" vine (vitis vinifera) . . . .51 



f Below zero, 

 j; Meteorological journal kept at the Albany Academy for October, 1820. 



