Why do you think Huxley chooses to juxtaposition the description of the process of human fertilization in the labs at the Bloomsbury Centre at the beginning of Chapter 10 with the scene between John and the sleeping Lenina at the end of Chapter 9

John's feelings for Lenina, and the images from Shakespeare he associates with her while she's sleeping are filled with emotion. The juxtaposition of the clinical lab setting is in direct contrast with his feelings and thoughts. John is experiencing the things no one is allowed to experience.