MT. 66. ] TO GEORGE ENGELMANN. 671 
Perhaps we young fellows may knock about rather 
faster than you like, wanting to do much in a little 
time. But then, you need not do so much in Colorado 
as we ; take the easy part. . . . I shall be sorry if you 
fail us. 
We must twine in Cuscuta, as we twine in the rest 
of the book. For real accuracy we must finally come 
to the terms I propose, entropie and antitropic. We 
ean’t get watch-hands into a good form for the de- 
scription of order, genus, ete. 
Be sure I Il keep you posted. Should like to go to 
Tron Mountain. 
WAITING ON RAILROAD FROM CANON City 
to PuEsxo, July 21, 1877. 
. If this flowering Euphorbia is the one you 
ticked fap I have made eed specimens, The round- 
leaved one is on the hills, and is not yet out; is not 
the one, I am sure 
We had yeateeilay a good day (with Brandegee)! 
at the Arkansas Cafion ; it is grand, surely. 
To-day Hooker and the Sttachays drive across and 
down Wet Mountain Valley to La Veta (two long 
days), while we, Mrs. Gray, Dr. Hayden, and I, re- 
turn by railroad to Pueblo, and thence to La Veta, by 
sunset to-day. To-morrow up to a camp on La Veta 
Pass of Sangre de Christo Mountains, which Captain 
Stevenson is preparing. 
Our English friends begin already to feel in a 
hurry, and for a wonder I am the hold-back member 
of the party. . . . 
1 T.S. Brandegee. Engaged on railroad surveys in Colorado and 
haga “hon nrg and the Northern Pacific. At present living 
in San Fran, 
