50 
DESCRIPTION OF THE COUNTRY. 
ROUGH ESTIMATE—Continued. 
Section. 
From Anton Chico to Rio Grande 
From Rio Grande to Campbell’s Pass of 
the Sierra Madre. 
From Campbell’s Pass to Flax river 
From Flax river to San Francisco Pass... 
From San Francisco Pass to Aztec Pass.. 
From Aztec Pass to mouth of White Cliff 
creek. 
From mouth of White Cliff creek to 
Rio Colorado. 
From Rio Colorado to Soda lake 
From Soda lake to northwest bend of 
Rio Mojave. 
Distance in 
No. of sq. miles 
Character. 
miles. 
in belt 30 miles 
wide. 
85 
2,550 
Woodland, £__ 
510 sq. miles. 
Cultivable soil, pj_ 
— 
170 
do. 
Rocky hills, \ _ 
—• 
510 
do. 
Prairie and pasture land, ij 
= 
1,530 
do. 
95 
2,850 
Woodland, -fc __ 
— 
285 
do. 
Cultivable soil, A_ 
— 
190 
do. 
Rocky hills, .. 
— 
285 
do. 
Prairie and pasture, A_ 
HZ 
2,280 
do. 
110 
3.300 
Woodland, -fe _ 
— 
330 
do. 
Cultivable soil, A_ 
— 
110 
do. 
Rocky hills, A-. 
zz 
330 
do. 
Prairie and pasture, 7 %.-.. 
zz 
2,640 
do. 
100 
3,000 
Woodland, 4.. 
— 
600 
do. 
• 
Cultivable soil, A_ 
— 
200 
do. 
Rocky hills, 7 V- - 
300 
do. • 
Prairie and pasture land, 7 ^ 
= 
2 , 100 
do. 
73 
2,190 
Woodland, ■%_ 
_ 
876 
do. 
Cultivable soil, 1 1 l j_ 
— 
219 
do. 
Rocky hills, A_ 
— 
109 
do. 
Prairie and pasture land, A 
= 
1,204 
do. 
42 
1,260 
Woodland, A _.. 
— 
84 
do. 
Cultivable soil, -fc. .. 
— 
84 
do. 
Rocky hills, 7 U_ 
. : 
84 
do. 
Prairie and pasture land, p§ 
zz 
1,092 
do. 
60 
1,800 
1 Woodland, xA_ 
= 
18 
do. 
Cultivable soil, A--. 
— 
150 
do. 
Rocky hills, A_ 
zz: 
90 
do. 
Prairie and pasture land, 7 %% 
= 
1, 692 
do. 
84 
2,520 
Woodland, Au_ 
_ 
10 
do. 
Cultivable soil, Air_ 
_ 
10 
do. 
Rocky hills, A... 
= 
50 
do. 
Sandy desert, A_ 
— 
126 
do. 
Prairie and pasture land, £5rcr 
zz 
2,335 
do. 
61 
1,830 
Woodland, -r-jjg_ 
_ 
7 
do. 
Cultivable soil, A.. 
— 
61 
do. 
Rocky hills, A_ 
— 
36 
do. 
Sandy desert, A.. 
= 
61 
do. 
Prairie and pasture land, § 
1,726 
do. 
MINERALOGICAL RESOURCES. 
For full and specific information upon this subject, I beg leave to refer to the geological 
reports. The following brief remarks are intended to convey a few general ideas regarding the 
value of the mineralogical outcrops of the country in relation to the construction and support of 
a railway. Many of the details here submitted were compiled from the Resume of Mr. Marcou, 
geologist and mining engineer to the expedition. In some cases its concise language has been 
retained. Generally, the remarks have been condensed, and facts derived from other sources 
have been added. 
The alluvium of the great valley of the Mississippi extends qjong the hanks of the river 
Arkansas as far west as Little Rock. This place is situated upon a slaty hill, at the commence¬ 
ment of a metamorphic ridge of mountains. Upon the river’s banks, a short distance above 
