APPENDIX. xxix 



— - 54. Gray grit, Attleborough. 



i/ 55. Gray grit, reddish, Newbury. 



— 56. Gray grit, reddish, with quartz veins, Pawtucket. 



— 57. Gray grit, reddish, divided by joints, Wrentham. 

 58. Gray grit, reddish, divided by joints, Pawtucket. 



— 59. Gray grit, reddish, variegated, Newbury. 



— 60. Gray grit, reddish, Milton. 



— 61. Gray grit, red, Kent's Island, Newbury. 



— 62. Gray grit, reddish, variegated, Hull. 

 -^ 63. Gray grit, Nassau, New York. 



— 64. Gray grit, Nassau, New York. 

 " 65. Novaculite, Charlestown. 



— 66. Argillaceous slate variegated, Charlestown. 



— 67. Argillaceous slate, rhomboidal, Rainsford Island. 



— 68. Argillaceous slate, rhomboidal. South Boston. 



~ 69. Argillaceous slate, laminse curved, Rainsford Island. 



~ 70. Argillaceous slate, light gray, Halifax. 



— 71. Argillaceous slate, with veins of calcite, Watertown. 

 v^72. Argillaceous slate, variegated, Quincy. 



-' 73. Argillaceous slate, Hull. 



— 74. Argillaceous slate, (Novaculite,) Boston Light House. 



— 75. Argillaceous slate, (Novaculite,) Hingham. 



— 76. Argillaceous slate, (Novaculite,) Spring Street, Roxbury. 

 -'77. Argillaceous slate, (Novaculite,) Watertown. 



— 78. Rock from a vein in granite, lead mine, Easton. 

 ~ 79. Prase, with asbestos, Brighton. 



V'SO. Slaty rock, reddish, Roxbury. 



81. Slaty rock, with quartz veins, Attleborough. 



82. Slaty rock, wedged between masses of sienite, Middleborough. 

 •/83. Slaty rock, chiefly slaty compact feldspar, Plympton. 



'>/84. Conglomerate, gray, (boulder,) Rochester. 



V85. Gray grit, Hanover Four Corners. 



n/'86. Gray grit, slaty (boulder,) Middleborough. 



^^87. Gray grit, with viens of amianthus, Dorchester. , 



88. Petalite, in limestone, Attleborough. 



■-/89. Gray grit, Inscription rock, Asonet, Berkley. 



'"• 90. Conglomerate, fragments of compact feldspar, cement indurated clay, 

 Saugus. 



91. Breccia, fragments of compact feldspar united, Nantasket Beach. 



— 92. Slaty aggregate of quartz and mica, MIddletown, Rhode Island. 



— 93. Slaty aggregate of quartz and mica, Middletown, Rhode Island. 



94. Slaty aggregate of quartz and mica, with argillaceous matter, Fall River. 



— 95. Slaty aggregate of quartz and mica with argillaceous matter, Fall River. 

 — 96. Slaty quartz, passing into mica slate, Fall River. 



"~* 97. Talcose slate, Randolph. 



— 98. Talcose aggregate, conglomerated. Canton. 



~-99. Talcose aggregate, conglomerated, Cambridge. 



