314 EEPOKT— 18G4. 



A2)ri7 6, 1864. 



Before starting the wind was from the S.E. 



At 4" 14"> p.m., at 2161 feet. Entered a W.S.W. current. 



On the Propagation or Sound. 



August 31, 1863. 

 At 6" 13" 30^ p.m., at 648 feet. People heard shouting. 

 At 6'' 15™ 40^ p.m., at 1963 feet. Could hear a loud buzzing noise ; rail- 

 way whistle heard. 



At 6" 37"" p.m., at 7022 feet. No sound of any sort. 



At 6" 57™ 30' p.m., at 1200 feet. Heard children's voices, 



Sepiember 29, 1863. 



At 8'' 13™ a.m., at 7671 feet. The roijort of a gun was heard. 

 At 8" 46™ 30^ a.m., at (12,415) feet. The report of a gun was heard. 

 At 9" 11™ 15' a.m., at (13,602) feet. A shrill whistle in the balloon was 

 heard as a ringing sound for 10 seconds, afterwards passing doAvn the balloon. 

 At 9'' 45™ a.m., at 14,224 feet. The report of a gun again heard. 



Octoher 9, 1863. 



At 4" 39™ 30' p.m., at 6277 feet. The deep roar of London heard. 

 At 4'' 40™ p.m., at 6506 feet. The roar of London deep and continuous. 

 At 4" 48™ p.m., at 7087 feet. The roar of London very deep. 

 At 5" 3™ p.m., at 3067 feet. Noise of London heard. 



January 12, 1864. 



At 2'' 46™ p.m., at 6885 feet. Can hear the ticking of a steam-threshing 

 machine. 



At 2*" 48™ p.m., at 7118 feet. Can hear people's voices. 



June 13, 1864. 



At 7'^ 21™ p.m., at 3291 feet. Heard the report of a gun 10 seconds after 

 seeing the flash. 



June 20, 1864. 



At e*" 29™ p.m., at 4102 feet. Can hear the ticking of a watch plainly. 

 At 6" 30™ p.m., at 4122 feet. Heard a railway train. 

 At &". 51™ p.m., at 4271 feet. Heard the report of a gun. 

 At 6" 54™ 30' p.m., at 4130 feet. A church clock striking. 



June 27, 1864. 



At 7" 45™ p.m., at 4699 feet. Heard a dog barking. 



At 7'' 53™ p.m., at 3958 feet. Can hear voices. 



At 8'' p.m., at 3604 feet. The report of a g-un heard. 



At S*" 6™ p.m., at 2594 feet. The report of a gun again heard. 



At &^ 8™ 30' p.m., at 2529 feet. Heard the whistle of a railway train. 



At 8" 29™ 30' p.m., at 2003 feet. Sounds very distinctly heard. 



At S*" 33™ p.m., at 1936 feet. A beU heard with a clear soimd. 



At S'' 39™ p.m., at 2337 feet. Heard the report of a gun again. 



