21.   His book provided a scientific analysis of human behaviour.

22.   His book recaptures the excitement of life in the Old West.

23.   His book sparked off a public controversy about the issue.

24.   His book was published not long after he died.

25.   His book was serialized in The New Yorker.

26.   His book won the Pulitzer Prize for literature.

27.   His discussion of the forces that shape it is one of the best parts of his book.

28.   In his book he seems rather proud of this episode, and I suppose it did foretell the scientist to be.

29.   In his book, Churchill describes that historic first meeting with Roosevelt.

30.   In his book, he describes how he endured the ordeal of prison life.