APPENDIX. lix 



45. Porphyry, with red base, (polished.) Blue Hills. 

 --46. Porphyry, base red, (polished,) north of Boston. 

 — 47. Porphyry, base red, (polished,) Nantaskct Beach. 



— 48. Greenish porphyry, (polished,) Maiden. 



— 49. Green porphyry, (polished,) ]\iilton. 

 —60. Porphyry, Needham. 



51. Porphyry, passing into sienite, JMalden. 



— 52. Porphyry, reddish brov/n, ciystals of feldspar and quartz, (polished,) 



Blue Hills. 



53. Green porphyry, passing into sienite, (smoothed,) Maiden. 



54. Green porphyry, crystals, feldspar and quartz, (smoothed,) Blue Hills. 

 —■-55. Vai-iegated porphyry, feldspar and quartz crysteils, (smoothed,) Blue 



Hills. 

 ■ — 56. Porphyry, base reddish, imbedded crystals, quartz, Quincy. 



57. Porphyry, base reddish, imbedded crystals, quartz, Milton. 



58. Brecciated jiorphyry, reddish, (polished,) Half-way rocks, Atlantic 



Oceiui. 



59. Breed. ited porphyry, (smoothed,) Lynn. 



60. Porphyry, (smoothed,) Maiden. 

 — <51. Porjihyry, (polished,) Maiden. 



— 62. Porphyry, (polished,) Nantasket Beach. 

 '^F'-i63. Greenish porphj'ry. Maiden. 



^nM )4. Porphj-ry with relics of a slaty structure, Nantasket Beach. 



do. Dendrite on porphyry. Railroad, Lynn. 

 V()Q. Dendrite on jasper, Saugus. 

 \/G7. Dendrite on compact feldspar, Holliston. 



V/'OS. Vein of compact feldspar in serpentine, Devil's den, Ne^vbury. 

 \/()9. Red compact feldspar, Newbury. 

 v'"70. Gray compact feldspar, (Ir*) Dedham. 

 v^71. Greenish gray compact feldspar, Newbury. 

 j/j'2. Compact feldspar and greenstone, Natick. 

 V73. Porphj'ry, West Newbury. 

 V74. Brecciated porphyry, Lynn. 



V75. Red porphyiy with vein of greenish feldspar, Saugus. 

 \^6. Porphyry, Manomet Hill, Plymouth. 

 V77. Brecciated porphyry, West Dedham. 

 V78. Epidotic porphyry, West Dedham. 

 \J79. Porphyry with veins of compact feldspar, (boulder,) Natick. 



SO. Porphyiy with veins of compact feldspar, West Dedham. 

 /•81. Porphyry, East Sherburne. 

 yCS2. Porphyry, Lynn. 

 ^^3. Por^ihyry, Lynn. 

 \^4. Porphyry, Manomet Hill, Plymouth. 

 I^SS. Porphyry, Manomet Hill Plymouth. 

 ^86. Porphyry, (boulder,) Medfield. 

 ^87. Brown porphyry, Marblehead Neck. 



88. Gray porphyry, (boulder,) North Scituate. 



