xii CONTENTS. 



of meteorites, 114, 115. Objections to Sorby's view that minerals of uulike spe- 

 cific gravity can iutercrystallize, 115. Objections to Helmholtz's theory that the 

 Earth is composed of meteoric fragments, 115, IIG. Boulders in Northern Drift, 

 fallen Meteorites, IIG. Unscientific to suppose. Meteorites have brought germs 

 of life to the Earth, IIG. Destruction of germs by the cold of space, 116. 

 Meteorites not exposed to action of water and air, 116. Meteorites not vein for- 

 mations, 117. Source of metals in veins, 117. Copper in Meteoric Rocks and 

 Terrestrial Basic ones, 117. Metallic Iron in Terrestrial Basic Rocks, 117. 

 Nickel, etc. in Meteoric and Terrestrial Masses, 118. 



SECTION IV. 



The Terrestrial Pekidotites 118-1G2 



Variety. — Dunite, 118-125. 

 Franklin, North Carolina, 118; structure indicates eruptive origin, 118. 

 Webster, North Carolina, and alterations in, 119, 120. Tafjord, Norway, 120. 

 Dun Mountain, New Zealand, 121. Sondmijre, Norway, 121. Robcrgvik, Nor- 

 way, 121. Bonhomme, France, 121, 122. Karlstiitten, Austria, 122. Tron, Nor- 

 way, 122. Heiersdorf, Sa.\ony, 122. Rouda Mountains, Spain, 122, 123. Serrania 

 de Ronda, Spain, 123. St. Paul's Rocks, their origin and alterations, 123-125. 



, Variety. — Saxonite, 125-128. 



Russdorf, Saxony, 125. Northern Norway, 125, 126. Thorsvig, Norway, 126. 



Birkedal, Norway, 126. Hovenden, Norway, 126. Rodfjeld, Norway, 126. 



Andestad Sec, Norway, 126, 127. Laugcnberg, Saxony, 127. Callcnbcrg, 



Saxony, 127. Tlie Ziegelei, Saxony, 127. Fatu Luka, Timor, 127. Eofua, Alps, 



127, 128. 



Variety. — Lherzolite, 128-147. 



Lake Lherz, France, 128, 129. Serrania de Ronda, Spain, 129. Italy, 120. 

 Ultenthal, Tyrol, 129. Colusa Co., California, 129-132; alteration structure in, 

 taken for stratification, 130. Inyo Co., California, 132. Production of Jilagnetite 

 during alteration, 132. .Alohsdorf Saxony, 132, 133. Rodhaug, Norway, 133. 

 Baste, Harz, 133, 134. Christiania, Norway, 134. Gjorud, Norway, 135. Presque 

 Isle, Michigan, 136-138. Formation of dolomitic rocks, 137, 138. Eruptive 

 origin of this Pcridotitc, 138. Ishpemiug, Michigan, 139. Dolomitic rocks, 139. 

 Transylvania, Austria, 139, 140. Fichtelgebirge, Bavaria, 140. Jaina River, 

 San Domingo, 140. Starkenbach, France, 140. Todtmoos, Baden, 141. Plumas 

 Co., California, 142. Levanto, Italy, 142. Eubosa, 142. Philippine Islands, 

 143. Lizard District, Cornwall, 143. Troad, Asia Minor, 143-147. Dikes of 

 Serpentine, 144. Diallage with Cleavage of Augite, 145. Schistose Rocks and 

 their origin, 146, 147. 



Variety. — Eulysite, 147-1 49. 



Tunaberg, Norway, 147. Kettdsfjall, Sweden, 147, 148. Varallo, Sesia Valley, 

 148. Lepce, Austria, 148. Fontanapass, Greece, 148. Mohsdorf, Saxony, 148. 

 Gillsberg, Saxony, 148, 149. 



Variety. — Picrite, 149-152. 



Austria, 149. Steierdorf, Banat, 149, 150. Inchcolm Island, Scotland, 150. 

 Herborn, Nassau, 150. Ellgoth, Austria, 150, 151. Anglesey, 151. Dillgend, 

 Nassau, 151, 152. 



