ates, as far as Seika Fé, is a series of observations made at 
Fort Leavenworth, with the same instrument, running through two, 
years; and the height of the hospital at Fort Leavenworth above 
the sea assumed at 912 feet. 
From Santa Fé, down the Del Norte, and thence west as far as 
camp 83, of October 26th, the basis of comparison is the series of © 
ye observations, running through two months, at Santa  @. ‘ é 
From the camp of October 26th, on the Gila, the Basie of com- 
arison isthe mean of the observations made at "San: ‘Diego, on the - 
acific, near the level of the sea. The barometer was left on the 
Pacific, under the charge of Lieutenant Warner, topographical en- 
gineers; and the further observations made with it on that coast - 
will afford, at some future time, data upon which to reconsider the 
results now given, particularly those in the last section, In the 
_ absence of corresponding observations, the object has been, to get a 
column of reference, progressing west, with the places observed at. 
The formula nsed is that of Altman’s.. The heights deduced are 
marked on the map; but they should be considered, at best, but as 
near approximations to the truth. 
The time of ‘day at which the observations were made is not that © 
_ which experience has shown to be best; but, SPE ots, Seige: 
yond my control, I was compelled to yield to circumstances. — 
As far as Santa Fé, I received the assistance of Lieutenants J. 
- neers; both of whom had but too recently returned from an ex- 
: ecperne expedition in less favored cHinates. and fell ill—the first at 
_ Bent’s fort, and the lust at Santa Fé. 
eae ae Santa Fé to the Pacific, I was aided ‘by First Likntellndt 
- Warner, of the topographical engineers, and Mr. Norman 
_ Bestor; all of whom deserve notice for the zeal and industry with 
which they performed their duty. Whilst with me, Lieutenant 
Peck made the topographical sketches; after he left, they were 
made by Lieutenant Warner. 
I would here gladly avail myself of the opportunity of fiankue * 
oe Robert Campbell and Dr. Engelmann,* of St. Louis, for the 
disinterested and efficient aid they rendered us in St. Louis in our 
hurried Jae eess for a long and tedious journey. The advice 
is give en us by Colonel Campbell, a gentleman of great aripempie: 
ap rairie life, was felt beneficially to the last of the journ 
"The country between Fort Leavenworth and Santa Fé, traversed _ 
by he army of the west, may be divided into three great divisions, 
character, climate, and products, viz: from Fort Leav- 
a awnee fey , from Pawnee fork to Bent’s Fort, and 
nt’s Fort to Santa Fé, 
two first divisions have been so Ne daira that I héve 
Seated. my diary embracin them, contenting myself with a few 
a Se 
sh pee eteromarks) but the states and especially as liob- — 
rvations ene to them, are as full as in ean ‘to the ee 
ak a 
