CONTENTS. 
HYDROGRAPHIC REPORT. 
GULF OF CALIFORNIA AND MOUTH OF THE C 
MOUTH OF THE CO: FO 
et ae ae EO hora : = 
FORT YUMA TO MOUTH OF BILL WILLIAMS'S FORK. 
BILL WILLIAMS’S FORK TO PYRAMID CANON. 
PYRAMID CANON TO BLACK CANON. 
BLACK CANON. 
DESCRIPTION OF BOAT TO BE USED UPON THE COLORADO, 
ESTIMATE OF COST OF TRANSPORTATION. 
