APPENDIX. li 



— 79. Gneiss, Methuen. 



— 80. Gneiss, Paxton. 



81. Porphyritic gneiss, Montague. 

 • — 82. Schistose gneiss, Tolland. 



83. Amphibolic gneiss with hornblende, Montague. 

 — 84. Amphibolic gneiss with hornblende, Leverett. 



85. Amphibolic gneiss with hornblende, Enfield. 



86. Amphibolic gneiss with hornblende, Pelham. 



— - 87. Epidotic gneiss, Amherst. 



— 88. Epidotic gneiss, Pelham. 



— 89. Epidotic gneiss, Amherst. 

 — 90. Epidotic gneiss, Grafton. 



91. Epidotic gneiss, Amherst. 

 ^-92. Augitic gneiss, Lee. 



— 93. Augitic gneiss, Lee. 



— 94. Augitic gneiss, Lee. 



— 95. Augitic gneiss, Lee. 



— 96. Antliophyllitic gneiss, Enfield. 



— 97. Anthophyllitic gneiss, Enfield. 



— 98. Arenaceous gneiss, Southbridge. 



— 99. Arenaceous gneiss, Smithfield, Rhode Island. 



— 100. Arenaceous gneiss, Smithfield, Rhode Island. 



— 101. Talcose gneiss, Smithfield, Rhode Island. 



— 102. Gneiss with a serpentine granite vein, Enfield. 



103. Common plumbago, Sturbridge. 



— 104. Apparently fibrous plumbago, Sturbridge. 



104. Partly crystaline jilumbago, Sturbridge. 



— 104. Fuller's earth, (V) Plumbago mine, Sturbridge. 



105. Bog iron ore. Plumbago mine, Sturbridge. 

 \/ 106. Bog iron ore in gneiss. North Brookfield. 



107. Garnet and molybdenite in gneiss, North Brookfield. 



108. Alum and sulphate of iron on gneiss, Leominster. 

 >/ 109. Alum and sulphate of iron on gneiss, Barre. 

 -"'IIO. Pyrope garnet in gneiss. New Braintree. 



111. Pyrope with adularia, Brimfield. 

 — 112. Pyrope, Norwich, Connecticut. 



113. Feldspar in gneiss, Boxborough. 

 ■^114. Green adularia with mica, (polished,) Sturbridge. 

 —115. Adularia, Brimfield. 



116. Adularia, Brimfield, 



117. Black tourmaline, Pelham. 



118. Black tourmaline, Pelham. 

 —119. Sphene in augitic gneiss, Lee. 

 — 120. Augite and scapolite, Lee. 



121. Iron pyrites, Hubbardston. 



122. Iron pyrites, Hubbardston. 



123. Blue quartz and pyrites, Hubbardston. 



