TO RIO SAN PEDRO. 
357 
Three instrument carriers ; five laborers and servants ; 
two cooks ; three arrieros and herders ; one teamster. 
To drive the twenty -five head of cattle and one hun- 
dred and eighty sheep, three men were employed. 
My immediate party consisted of the following : 
Thomas H. Webb, Secretary of the Joint Commis- 
sion^ Surgeon^ and Mineralogist 
John C. Cremony, Interpreter. 
Henry C. Pratt, Draughtsman. 
George Thurber, Quarter -master.^ Commissary^ and 
Botanist. 
John J. Pratt, Assistant (afterwards transferred 
to Lieutenant Whipple). 
One cook; two laborers and servants ; three arrieros. 
The whole party, including myself, made fifty- 
seven persons, to which I must add the captive girl, 
Inez Gonzales, whom I meant to send to her family at 
Santa Cruz when we should be near that place. My 
original intention had been to take the larger portion 
of the military escort with me ; and Colonel Craig had 
made his arrangements accordingly, and intended to 
accompany it himself, leaving Lieutenant Green with a 
small detachment for the parties on the Eio Grande, 
with the hope that additions would be made to it as 
soon as the recruits came out. But his plans, as well 
as my own, were frustrated by the depredations of the 
Indians. To have waited until Colonel Craig could 
make good his losses would have deferred the expedi- 
tion for a month at least. I therefore thought it best 
to hasten on and fulfil my engagements with the Mexi- 
can Commission, and then proceed to the Gila and 
commence the survey. I requested Colonel Craig with 
