Simplify the following text for a Grade 10 native English-speaking person.
Original: In ancient civilizations , books were often in the form of papyrus or parchment scrolls , which contained about the same amount of text as a typical chapter in a modern book .
Simplified: In ancient civilizations , books were often in the form of papyrus scrolls , which contained about the same amount of text as a typical chapter in a modern book .