ILLUSTRATIONS. 



Portraits of Early Botanists: 



Plate 1 facing 39 



Plate 2 " 43 



Physiographic Features of the Lower Irondequoit Valley; Chadwick. 



Plate 3 facing 123 



Diagrams in the text; Chadwick. 



Figure 1 125 



2 127 



3 141 



4 148 



5 ISO 



6 154 



" 7 156 



8 157 



Maps; Chadwick. 



A. Lake Dawson Stage, Plate 4 facing 160 



B. A Stage of Sub-Dawson, Plate 5 " 160 



C. Closing phase of Lake Iroquois, Plate 6 " 160 



D. Lake Emmons Stage, Plate 7 " 160 



E. Gilbert Gulf Stage, Plate 8 " 160 



F. Lake Ontario Stage, Plate 9 " 160 



G. Present phase of Lake Ontario, Plate 10 " 160 



Maps of Eskers and Diagrams; Giles. 



Figure 1. Esker System 180 



Figures 2, 3. Crestlines 184 



Figure 4. Finland Eskers 199 



5. Rush Esker, Plate 11 facing 208 



" 6. Cartersville Esker 209 



Figures 7, 8, 9. Palmyra Eskers, Plate 12 facing 216 



Figure 10. Esker west of Mendon Pond, Plate 13 " 218 



11. Esker east of Mendon Pond, Plate 14 " 220 



12. LeRoy Esker 224 



Figures 13, 14. Eagle Harbor Esker, Plates 15, 16 facing 228 



Figure 15. Holley Esker 230 



Portrait of Henry A. Ward, Plate 17 facing 241 



" " Grove K. Gilbert, Plate 18 " 252 



