Jacob Abbott 
Caleb In The Country [EPUB ebook] 

CALEB’S DISCOVERY. 
Caleb was a bright-looking, blue-eyed boy, with auburn hair and happy countenance. And yet he was rather pale and slender. He had been sick. His father and mother lived in Boston, but now he was spending the summer at Sandy River country, with his grandmother. His father thought that if he could run about a few months in the open air, and play among the rocks and under the trees, he would grow more strong and healthy, and that his cheeks would not look so pale.
His grandmother made him a blue jacket with bright buttons. _She_ liked metal buttons, because they would wear longer than covered ones, but _he_ liked them because they were more beautiful. ‘Besides, ‘ said he, ‘I can see my face in them, grandmother.’
Little Caleb then went to the window, so as to see his face plainer. He stood with his back to the window, and held the button so that the light from the window could shine directly upon it.
‘Why grandmother, ‘ said Caleb, ‘I cannot see now so well as I could before.’
‘That is because your face is turned away from the light, ‘ said she.
‘And the button is turned _towards_ the light, ‘ said Caleb.