514 PHILOSOPHY OF STORMS. 



have received it, that I expressed my intention of address- 

 ing Professor Espy on the subject. With great respect, 



B. G. TENNEY. 



To Professor Espy. 

 22d March, 1840. 



P. S. Other engagements have prevented my furnishing 

 the above statement of facts at an earlier moment, as I in- 

 tended. You will djscover, from the manner, that they 

 have now been thrown together in great haste. 

 With great respect, your obedient servant, 



B. G. TENNEY. 



PHILADELPHIA, 5 mo. 15, 1841. 

 ESTEEMED FRIEND, 



215. At noon, on the twelfth day of the sixth month last, 

 I set fire to a clearing of six acres in Wharton township, 

 Potter county, Pennsylvania. It was what is generally 

 called a clear day ; the sun shone brightly, although there 

 were a few broken clouds slowly moving towards the east. 



After the fire was well under way, the wind began to 

 blow towards it, increasing after the fire had arrived at its 

 maximum. 



The wind blew inwards from all sides, sometimes blow- 

 ing the smoke in one direction, and sometimes in another. 

 The clouds appeared to congregate and hover over the fire. 

 After the fire became general and the wind strong, I saw 

 no cloud cross over the fire, but could see the clear sky be- 

 low the cloud. 



Some of the neighbors were present, and appeared to be 

 alarmed at the violence of the wind as it roared through 

 the woods ; it was more violent than I should have antici- 

 pated, had I not heard thee suggest that such would be the 

 case. 



Nevertheless, the rain did not come, and my friends be- 



