APPENDIX 
ARTICLE I. 
NOTICE OF THE FOSSIL FISHES: 
By Professor Louis Agassiz. 
ARTICLE II. 
DESCRIPTIONS OF THE FOSSIL SHELLS: 
By T. A. Conrad. 
•> ARTICLE III. 
CATALOGUE OF THE RECENT SHELLS, WITH DESCRIPTIONS OF THE NEW SPECIES: 
By Augustus A. Gould, M. D. 
ARTICLE IV. 
LETTER FROM PROFESSOR J. W. BAILEY, DESCRIBING THE STRUCTURE OF THE FOSSIL PLANT, FROM 
PASUNCULA RIVER. 
ARTICLE V. 
DESCRIPTION OF THE STRUCTURE OF THE FOSSIL WOOD FROM THE COLORADO DESERT: 
By Professor Geo. C. Schaeffer. 
ARTICLE VI. 
CHEMICAL EXAMINATIONS OF THE SOILS AND INCRUSTATIONS: 
By J. D. Easter, Ph. D. 
ARTICLE VII. 
DESCRIPTION OF PLANTS COLLECTED BY W. P. BLAKE ALONG THE ROUTE AND AT THE MOUTH OF THE 
GILA. 
By Professor John Torret. 
ARTICLE VIII. 
DESCRIPTION OF FOSSIL MICROSCOPIC ORGANISMS, FROM MONTEREY: 
By Professor J. W. Bailey. 
