Fahrenheit 451 pp. 71-80

A question i had was on page 78 when Montag is reading part of the bible and he says "Denham's Dentifrice", what does he mean?

What Montag means when he said that the books point one way oranother, to Carisse, was that the books and Clarisse are some what in common. She talks about the world and how people and children are killing one another, and then she talks about the past and how the children didn't really harm one another. She compares the two worlds, the one in the past and the one that she is living in. She talks to Montag and kind of opens his eyes to let him see that what he is doing and what everyone else is doing is meaningless, and its just hurting people who want to do what they used to do. When Montag starts reading the books about the past he remembers when Clarisee used to talk to him about the people in the past. He remembers when she told him that houses use to have porches and the architecters destroyed them because the didn't want people to have time to think about the world. Montag knows that Clarisee was unique but he knew that she was right about the things she said. That's why he remembers her when he reads the book.