ILLUSTRATIONS 
PLATES 
PLATE PAGE 
Frontispiece. Pavlof Volcano, Alaska Peninsula. iii 
I. Map of Alaska, showing routes. 4 
II. Dikes in marble ) 
v 9 20 
Chert strata > . 
III. Mount Shishaldin. 28 
IV. Andesite, Bogoslof Island 
Liparite, St. Lawrence Island 
V. Hall Island | 
Plover Bay > 
VI. Cleavage in slate. 52 
VII. View from Chichagof Peak. 74 
VIII. Chichagof Peak. 78 
IX. Eocene fossils. 122 
X. Eocene and Miocene fossils. 122 
XI. Yakutat fossils. Terebellina palachei . 146 
XII. Yakutat fossils. Inoceramya concentrica . 146 
XIII. Yakutat fossils. Inoceramya. Myelophycus . 146 
XIV. Yakutat fossils. Arthrodendron diffusum . 146 
XV. Yakutat fossils. Palceodictyon . 146 
XVI. Yakutat fossils. Chondrites. Helminthoida . 146 
XVII. Yakutat fossils. Helminthoida vaga . 146 
XVIII. Yakutat fossils. Gilbertina. Gyrodendron. Chon¬ 
drites . Retiphycus . .... 146 
XIX. Yakutat fossils. Gyrodendron emersoni . 146 
XX. Yakutat fossils. Cancellophycus. Helminthopsis ?.... 146 
XXI. Yakutat fossils. Helminthopsis magna . 146 
XXII. Eocene plants. Sequoia. Corylus. Picea . 162 
XXIII. Eocene plants. Corylus. Pinus? . 162 
XXIV. Eocene plants. Pinus? Betula. Picea . 162 
XXV. Eocene plants. Vaccinium. Phyllites. Picea . 162 
XXVI. Eocene plants. Hicoria. Pterospermites . 162 
XXVII. Eocene plants. Hicoria magnijica . 162 
XXVIII. Eocene plants. Corylus? Alnus . 162 
XXIX. Eocene plants. Hicoria. Acer . 162 
(ix ) 
