CHAPTER IX [VII of Vol. II]—Sandstone Formation at

the Base of the Rocky Mountains. The Platte within the Mountains. Granitic Mountains between the Platte and Arkansa. Castle Rock. Birds. Plants 286

APPENDIX A [Vol. I] 317

APPENDIX B [Vol. I] 329

APPENDIX C [Vol. I] 347

ILLUSTRATIONS TO VOLUME XV

"Distant View of the Rocky Mountains" 269

"View of the Chasm through which the Platte issues from the Rocky Mountains" 283