CONTENTS. 



Pages 

 PREFACE v-viii 



INTRODUCTION . ix-lvii 



Chapter 



I. The different Kinds of Rocks treated of 1-3 



II. The Mineral Characters of Ophites and related Rocks . . 4-7 



III. Structural Characters of Ophites and related Rocks .... 8-11 



IV. Origin of certain of their Mineral, Structural, and Che- 



mical Characters 12-27 



V. Mineralized and Methylosed Metamorphic Rocks 28-33 



VI. Why some Metamorphic- Rocks have been Mineralized 



and others Methylosed 34, 35 



VII. Methylotic Origin of Ophites 36-42 



VIII. Serpentinization effected in certain Deposits without the 



intervention of Mineralization 43, 44 



IX. Many Ophites were Sediments, and others Igneous Rocks- 



originally 45, 4& 



X. Methylotic Origin of Hemithrenes and other related Cal- 



citic Rocks 47-5 



XI. On the Origin of the Minerals characteristic of Ophites 



and related Rocks of Peridote in particular 60-71 



XII. On the Origin of the Archa3an " Crystalline Limestones " 



of Canada : 72-82 



a 2 



690919 



