They filled it with air, and sent it on its journey.
It sailed finely, and soon was out of sight.
They tried it again.
The second time it took fire and was soon nothing but ashes.
About this time Finley heard his first lecture upon electricity.
After graduating, he returned to his father's house in Charlestown.
There he wrote a letter to his brothers with a queer kind of ink.
The writing did not show at all until heated by fire.
His brothers had to write to him to find out how to read it.
About this time Finley made a new friend.