APPENDIX. Ixi 



V 136. Green porphyry, North Scituate. 

 ■^ 137. Green porphyry, North Scituate. 

 ''- 138. Green porphyry, North Scituate. 

 "^ 139. Green porphyry, North Scituate. 

 V 140. Green porphyry. North Scituate. 



141. Porphjry conglomerate. North Scituate. 



142. Porphyry conglomerate, North Scituate. 



143. Porphyry conglomerate. North Scituate. 



144. Porphyry conglomerate. North Scituate. 



145. Porphyry conglomerate. North Scituate. 



146. Porphyry conglomerate. North Scituate. 



147. Veined porphyry. North Scituate. 

 V' 148. Veined porphyry. North Scituate. 



149. Variegated porphyry. North Scituate. 



150. Variegated porphyry. North Scituate. 



XVm. SlEXITE. 



*' 1. Feldspar and hornblende, (smoothed,) Newbury. 



— 2. Feldspar and hornblende, near porphyry, Nahant. 



3. Feldspar and hornblende, (smoothed,) Stoneham. 



4. Brecciated feldspar and hornblende, Foxborough. 

 ~5. Feldspar and hornblende. Concord. 



6. Feldspar and hornblende, (smoothed,) Dover. 

 ~^7. Feldspar and hornblende, (smoothed,) Reading. 

 --8. Feldspar and hornblende, (smoothed,) Nahant. 

 -" 9. Feldspar and hornblende, Norfolk County. 

 -'10. Feldspar and hornblende, Rowley. 



11. Feldspar and hornblende, Hangman's Island, Boston Harbor. 



12. Feldspar and hornblende in distinct crystals, (smoothed,) Dedham. 

 • -13. Feldspar and hornblende, (smoothed,) Randolph. 



14. Feldspar and hornblende, Reading. 



~"15. Feldspar and hornblende, Cumberland, Rhode Island. 



"18l Feldspar, hornblende and epidote, Dedham. 



17.\Sienite, Salisbury. 



18. Sienite, Manchester. 



— 19. Sienite, (Qiiincy granite,) Quincy. • 



^20. Sienite, (smoothed,) Quincy. 



21. Sienite, (boulder,) Mansfield. 



—22. Sienite, Franklin. 



23. Sienite, (smoothed,) Danvers. 



24. Sienite, (smoothed,) Squam, Gloucester. 



25. Sienite, (smoothed,) Squam, Gloucester. 



26. Sienite, (smoothed,) Sandy bay, Gloucester. 

 —'27. Sienite, (smoothed,) Sandy bay, Gloucester. 



28. Sienite, (smoothed,) Squam, Gloucester. 



29. Sienite, (smoothed,) North Bridgewater. 



30. Quartz and feldspar, (smoothed,) Manchester. 



