1. INTRODUCTION AND BACKGROUND  
1.1. Overview of Existing Atmospheric Detections  
1.2. Alkali Metal Absorption in Exoplanetary Atmospheres  
1.3. Future Prospects and This Study  

2. OBSERVATIONS AND DATA REDUCTION  
2.1. Description of Observations  
2.2. Data Reduction  

3. ANALYSIS  
3.1. Transmission Spectra  
3.2. Estimating Errors with Monte Carlo Methods  
3.3. Confirming Detections with a Control Line  

4. RESULTS  
4.1. Ca I Control Line  
4.2. Na I  
4.3. K I  

5. DISCUSSION  
5.1. Dependence on Scale Height  
5.2. Temperature Inversions  
5.3. Exospheric Absorption  
5.4. Velocity Shifts of Atmospheric Lines  
5.5. Comparison with Models  
5.6. Future Work  

6. SUMMARY