APPENDIX. 



xvii 



RAIN AND FOGS. 



Enumeration of Days on which Main has fallen at Oiim Diim in every Month from 

 1816 to 1823 inclusive; also of Foggy Mornings, distinguished by the terms Dense 

 and Light, the quantity floating in the Atmosphere on the 3Iornings registered. 



It will be seen by this Table that fogs prevail most in those months which produce least 

 rain ; and, to this source of refreshment to vegetation, in January, February, and March, may 

 be added the copious dews which fall at this season, which, united with the fogs, preserve a 

 Verdure over the plains of Bengal, not connnon to the higher provinces. The country for 

 many miles round Calcutta is almost a flat surface, the plains of Dum Duni only exceeding the 

 height of the spring tides about eight feet, and it is not much above thirty feet higher than the 

 level of the sea. 



Vol.. II. C 



