XII ILLUSTRATIONS. 



Page 

 Plate XXXVII. A, Basin containing lakelet in the midst of a broad gravel plain; northern 



part of Windsor 454 



-B, Gravel mesa ; southern part of China 454 



XXXVIII. Map of Androscoggin County, showing location of glacial gravels 490 



XXXIX. Map of Aroostook County, showing location of glacial gravels 490 



XL. Map of Cumberland County, showing location of glacial gravels 490 



XLI. Map of Franklin County, showing location of glacial gravels 490 



XLII. Map of Hancock County, showing location of glacial gravels 490 



XLIII. Map of Kennebec County, showing location of glacial gravels 490 



XLIV. Map of Knox County, showing location of glacial gravels 490 



XLV. Map of Lincoln and Sagadahoc counties, showing location of glacial gravels.. 490 



XLVI. Map of Oxford County, showing location of glacial gravels - 490 



XLVII. Map of Penobscot County, showing location of glacial gravels 490 



XLVIII. Map of Piscataquis County, showing location of glacial gravels 490 



XLIX. Map of Somerset County, showing location of glacial gravels.. 490 



L. Map of Waldo County, showing location of glacial gravels 490 



LI. Map of Washington County, showing location of glacial gravels 490 



LII. Map of York County, showing location of glacial gravels 490 



Fig. 1. Stratification of wind-blown sand ; Lockes Mills 12 



2. Section across deep lenticular sheet of till; Kents Hill, Readfield 32 



3. Section across Munjoy Hill, Portland 32 



4. Longitudinal section of cove 42 



5. Transverse section of sea wall 43 



6. Transverse section of ancient cove gravels 45 



7. Ancient beaches sloping up from the shore 46 



8. Section across terminal moraine near head of Kennebec Inlet 51 



9. Osar and delta-plain inclosing lakelet ; Van<!eboro 71 



10. Osar cut by the Piscataquis River at Medford Ferry 123 



11. Section of osar ; Levant 132 



12.1 



„" ^Crumpled strata near surface of osar ; Kenduskeag Valley 132 



14. Section across Exeter Mills-Hermon osar, in Carmel 133 



15. Meandering of osar ; Carmel 133 



16. Osar; Pittsfield 149 



17. Map of Hogback Mountain ; Montville and vicinity ; 151 



18. Section across channel eroded in the till ; Montville 152 



19. Reticulated ridges and Hogback Mountain, from the north 153 



20. Section across Kennebec Valley 176 



"1' f Stratification of a lenticular esker ; Auburn i 



ZZJ L205 



23. Landslip at Bramhall Hill; Portland 232 



24. Broad osar penetrating narrow pass over hill 400 feet high ; Limington 258 



25. Ideal sections across channels of superficial glacial streams 317 



26. Section of clifi' and pothole ; Paris 328 



27. Sheet of marine clay overlying osar ; Waterville .^ 379 



28. Marine clay overlying base of osar and itself covered with a capping of gravel; 



Corinth 380 



29. Marine clay in the midst of osar gravel ; Hermon Pond 380 



30. Marine clay overlying base of osar ; Hampden 381 



31. Lenticular esker flanked with blowing marine sand; Bowdoin 383 



32. Ideal section of glacial-stream channels crossing transverse valleys 433 



33. Section of valley between Sherman and Springfield 437 



34. Diagrammatic section across osar-plain ; Woodstock and Milton 442 



35. Diagrammatic section across osar-plain ; valley of Bog Brook, Canton 442 



36. Diagram illustrating the method of finding the highest sea level in an interior valley .. 482 



