1895.] Explorations of Thomas Coulter. 531 
I earnestly request that any known facts regarding Thomas 
Coulter not included in this paper be communicated to me. 
These together with other matter, including the letters of 
Coulter to Augustin Pyramus and Alphonse DeCandolle, to 
which through the courtesy of Dr. Casimir DeCandolle I 
have recently had access, may hereafter be incorporated into 
a more detailed account of Coulter’s labors. 
Washington, D. C. 
EXPLANATION OF PLATE XXXV. 
The plate is a photolithographic reproduction, on the original scale, 
of the principal part of the map, which was itself a lithograph, pub- 
lished with Coulter’s “Notes on Upper California.” About an inch 
and a half was cut off the original at the top and bottom, neither por- 
tion containing auy mark of Coulter’s route. 
