She glanced around; found herself alone, and the next instant she had the book in her hands.

The title-page--Professor Somebody's ANATOMY--carried no information to her mind; so she began to turn the leaves.

She came at once upon a handsomely engraved and colored frontispiece--a human figure, stark naked.

At that moment a shadow fell on the page and Tom Sawyer stepped in at the door and caught a glimpse of the picture.

Becky snatched at the book to close it, and had the hard luck to tear the pictured page half down the middle.