human
My! I didn't suppose such weird beauty of sound could be produced under any possible conditions,
gpt
Now the air will be free for all for a short time, said Hal, putting on the phones and throwing back the horn switch, while the other boys also donned their phones.
human
I'm going to see if I can get any of those fellows we talked with on the way up here.
gpt
Get that amateur with the radio compass who proved Mr. Perry's mathematical theory,
human
All right I remember his call and wave length; so here goes.