788 



RAINS, GABRIEL J. 



sound, while the sulphurous ether yielded a 

 ringing musical note. Other vapors were found 

 to produce musical tones in proportion to their 

 ability to absorb radiant heat. The more dia- 

 thermanous gases also yield faint sounds, while 



the highly absorbent, like olefiant gas, give out 

 loud tones. It is inferred that the same effects 

 in solid bodies also are due to rapidly occurring 

 changes in temperature. Mercadier has ob- 

 tained the tones from the red and the heat rays, 



H 



and from the heat-rays alone. Tyndall produced 

 sounds even with a piece of iron not quite red- 

 hot, placed behind the interrupting disk. 

 RAINS, GABRIEL J., born in Craven County, 



lina, August 6, 1881, aged seventy-seven. Gen- 

 eral Rains entered the Military Academy at 

 West Point in 1823, and graduated in 1827, 

 one year before Jefferson Davis, with whom 



North Carolina ; died at Aiken, South Caro- he was a cadet. He was assigned to the First 



