14. Who introduced it into Europe, and when?
15. What made the use of paper common, and why?
16. What writing material was invented in the 19th century?
17. What are some of its advantages and disadvantages?
18. What are tablets and how were they made and used?
19. What kind of ink did the ancient people use?
20. When were irongall inks invented?
21. What kind of ink did the early printers use?
22. What did the ancient writers write with?
23. What was the form of the ancient papyrus book?