He felt himself to be very uncomfortably warm, and his friend's faces looked very hot and flushed.
Hastily removing the cover that protected the thermometer, he closely inspected it, and in an instant uttered a joyous exclamation.
"Hurrah!" he cried.

"We're moving! There's no mistake about it.

The thermometer marks 113 degrees Fahrenheit.

Such a stifling heat could not come from the gas.

It comes from the exterior walls of our projectile, which atmospheric friction must have made almost red hot.