LETTER OF TRANSMITTAL. 
Sir : I have the honor of transmitting for publication the second 
part of a Manual of the Plants of Western Texas, which has been pre- 
pared by Prof. J. M. Coulter, by the instruction of the Secretary, 
mainly as‘the result of investigations which have been prosecuted in 
Texas, under the direction of the Botanical Division, by Mr. G. C. Neal- 
ley, of Houston, Tex. 
Respectfully, 
Dr. GEORGE VASEY, 
Botanist. 
Hon. J. M. Rusk, 
Secretary of Agriculture, 
FEBRUARY 12, 1892, 
