594 APPENDICES. 
question connected with the survey, d&e., he will defer to your opinion 
until the case is submitted to, and decided by the department. 
After the work in the field shall have been completed, the maps 
shall be drawn, under the immediate supervision of the surveyor under 
your control, on the scale suggested in the instructions to you under the 
date of October 23, 1850. In the mean time, during an inclement sea- 
son, when the field-work may necessarily be arrested, the first plotting 
(or rough sheets) should be prosecuted. On the completion of the maps, 
they shall be signed by the surveyor, previous to their being authenti- 
cated by the commissioners. 
No officer but yourself is allowed to draw for any moneys appropri- 
ated for the Mexican Boundary service. The surveyor may draw his sa- 
lary from this department or from you. ALL THE SCIENTIFIC DEPART- 
MENTS not: directly connected with the surveys of the boundary line, are 
placed under your immediate direction. The means appropriated by 
Congress being very limited, it is incumbent upon tbis department to 
order such reductions in the number of persons devoted to the purposes 
of science as your discretion may deem least advantageous. You, as the 
first officer of the Commission, will be held responsible to this depart- 
ment for the proper administration of the great work confided to your 
charge. 
* 
* * * * * * * 
Tam, &e. 
ALEX. H. H. STUART, 
Seer etary. 
To Joun R. Barrierr , Esq. 
Commissioner, etc. etc. 
oh 
List of Members of the United States and Mexican Boundary 
Commission, as organized in Washington, August, 1850. 
Joun R. Barrtert, Commissioner. 
Anprew B. Gray, Principal Surveyor. 
Tuomas H. Wess, VM. D., Secretary. 
