CONTENTS 



EARTH STUDIES. 



CHAPTER PAGE 



I. Inaccessible Valleys (first appeared in the Nineteenth 



Century, March, 1893) 1 



II. The Permanence of Oceanic Basins [Natural Science, 



August, 1892) 28 



III. Our Molten Globe {Fortnightly Beview, November, 1892) 40 



IV. The Ice Age and its Work. Erratic Blocks and Ice- 



sheets {Fortnightly Review, November, 1893) ... 59 



V. The Ice Age and its Work. • Glacial Erosion of 



Lakecasins {Fortnightly Review, December, 1893) . . 94 



VI. The Gorge of the Aar and its Teachings {Fortnightly 



Review, August, 1896) 129 



DESCRIPTIVE ZOOLOGY. 



VII. Monkeys : their Affinities and Distribution {Contem- 

 porary Review, December, 1881) 146 



VIII. The Disguises of Insects {Science Gossip, September 1, 



1867) 185 



