iTJ.rsTiiATioNS. xix 



Page. 



Fig. 12. Surface of black limestone with contorted qnartz V(^ins, Wliately li)H 



13. Section on railroad east of Erving station 21" 



14. Section of schists west of Belchertown 244 



15. Map of Devonian rocks on the Williams farm, Bernardston 263 



16. Section of Devonian rocks from the Williams farniliousc 250 rods northwest 264 



17. Section of the Williams farm quarry 264 



18. Section at north end of limestone, Williams farm 266 



19. Section across Bernardston series on Purple blind road, Mernardstcm 278 



20. Sketch map of rocks near the mouth of Millers River, Erving 2'J5 



21. Sketch of rocks at mouth of Millers River, looking northeast from B, fig. 20 295 



22. Section on east bank of the Connecticut above mouth of Millers River, at A, fig. 20 . .. 2!M) 



23. Section at the Holyoke dam, showing the passage of a fault through the shales 371 



24. Thin sections of sand and glass breccia from the base of the Greenfield sheet at the 



City q uarry and of trap from Cheapside 422 



25. View of the posterior trap sheet and its feeding dike at Little Mountain, in Forest 



Park, Northampton 466 



26. Section of Delaney's cjuarry on the Connecticut River liailroad in Northampton, near 



north line of Holyoke 470 



27. Section of contact of Black Rock plug and the Mount Holyoke diabase bed 490 



28. Holyoke notch from Hadley meadow ; pre-Glacial rock terraces 510 



29. Glacial groove on compact diabase. Prospect House, Mount Holyoke .")27 



30. East slope of a large glaciated groove behind tlie bowling alley on Mount Holyoke 530 



31. Sectiou showing the stri;e on the surfa<-e of sandstone continued on the surface of the 



till. Hoe Factory, Northampton 540 



32. Pelham Lake section 578 



33. Section of terminal moraine covered by high-level flood gravels of Westfield River, at 



Russell 607 



34. Sand bowlders, in terminal moraine, crushed l>y thi- ice while frozen 607 



35. Section thrcmgh the eroded front of the great delta at Montague City 6J9 



36. Section of the Green River delta at north end of Green River basin 631 



37. Section of the shore beds of Hadley Lake south of College Hill, Amherst 646 



38. Enlarged section of the south side of the cutting shown in fig. 37 647 



39. Detail of clay layer crumpled by the current, from fig. 38 648 



40. Sections south of Millers Falls station, showing- kcttle-hob-s iormi-il by ire melting 



from beneath the sands 666 



41. Sectiou south of Millers Falls, showing kettle-hole formed by ice stranded on the sur- 



face of the sands 668 



42. Section of north half of kettle-hole below Dwight's station, Belchertown 669 



43. Section at the south end of North Pond, Belchertown, showing part of a kettle-hole at 



the north end and of an erosion slope at the south end 670 



44. Section of kame sands at the north end of the "big fill,'' south of I iwiglit's 671 



45. Block of frozen "pink sand," showing fine system of joints 681 



46. Pharyngeal bone of a fish, from the Champlain clay, Holyoke 721 



47. Sketch of the point of the Northampton meadow from Mount llolynkc showing that 



the meadow is a composite of many islands 726 



48. An old oxbow of Fort River cut by the Connecticut below Hadley 737 



