1. In what way does the second essay differ from the first?
(a) The second essay has a darker, more sinister tone than the first.
(b) The second doesn't recount any specific experience.
(c) The second was written before the author's experimentation with drugs.
(d) The second was originally a journal entry, and the author didn't intend to publish it.

2. How are light and color typically experienced by mescalin users while they are under the influence of the drug?
(a) They appear in natural patterns and tessellations.
(b) They appear in geometric shapes, such as buildings or mosaics.
(c) They appear in soft, rounded shapes, such as balls or orbs.
(d) They appear as movement trails and waves.

3. What is the main reason for conducting the experiment in which the author participates?
(a) A need to understand the so-called "visionary" experiences associated with the drug.
(b) A need to catalogue the psychological effects of the drug on someone who already has a psychiatric illness.
(c) A need to understand why the drug has been used in religious and secular ceremonies.
(d) A need for more comprehensive information regarding the drug's long-term side effects.

4. Which is NOT one of the "visionary arts" that the author mentions at the beginning of Appendix 3?
(a) Religious ritual.
(b) Fireworks.
(c) Pageantry.
(d) Theatrical spectacle.

5. According to the author in Appendix 2, how would "proponents of a 'Nothing-But' philosophy" interpret mystical experiences?
(a) As simply the results of chemical changes in the brain.
(b) As an inexplicable glimpse into the Mind-At-Large.
(c) As a profoundly religious experience, independent from chemical changes.
(d) The result of mental illness.