8 CONTENTS. 
CHAPTER X. 
Page 
I. Geological report of the country explored under the 38th and 41st parallels M north latitude in 1853—54, 
by James Schiel, M. D., geologist for the expeditions  - 96 
IL. Letter from Professor J. W. Bailey, upon infusorial fossils submitiod to dn ü Dr. Schiel E ` 111 
APPENDIX. 
Instructions from the Secretary of War E E - - - - - - - E - 113 
ERRATA. 
Page 77.—Under the head of Corrected Barometer, No. 551, observation of December 12, at 12 o'clock m., for 95. 713, read 
95. 613 
Page 77.—Under the head of Corrected Darometer, No. 496, observation of December 12, at 3 p. m., for 95. 768, read 95. 668 
Page 80.—Under the head of Corrected Barometer, No. 551, observation of February 21, at 9 a. m., for 25. 698, read 25. 598. 
Page 80.—Under the head of Corrected Barometer, No. 551, observation of March 3, at 9 a. m., for 25. 758, read 25. 658 
Page 87.—Under the head of Corrected Barometer, No. 551, observation of May 8, at sundown, for 25. 758, read 25, 658. 
