1. INTRODUCTION

2. THE GLASS DATA AND DATA REDUCTION

3. SAMPLE SELECTION AND SPECTROSCOPY

4. FLUX LIMITS AND EQUIVALENT WIDTHS

6. STATISTICAL ANALYSIS OF THE LY α DETECTIONS

7. NOTE ON FOUR INDIVIDUAL OBJECTS

8. PHYSICAL PROPERTIES FROM Lyα EMITTERS

9. STACKING THE $z\gtrsim7$ SPECTRA

10. THE SPATIAL EXTENT OF LY α AT $z\gtrsim7$

11. SUMMARY