122 
Transactions Texas Academy of Science. 
Harrington, H. H. 
about tliree miles. For this entire length the valley is either traversed or 
skirted by the iG. H. & iS. A. iR. R. and the T. & P. R. R., these railways 
using the same track from El Paso to Sierra Blanco, ninety miles south- 
east. For about thirty miles below El Paso the greater part of the valley 
is now under cultivation. In many instanoes the orchard and vineyards 
are brought up to the highest state of perfection, rivaling in beauty and 
value those of the Pacific Slope. 
* 4f- -IS- -li- -X- 
“Soils . — iThe soils of the valley may in a general way be divided into 
three elasses : 
“First — ^The heavy ‘adobe’ soil of the river deposit. 
“iSecond — The sandy loam, being an intimate mixture of the adobe soil 
with the sand of the foothills adjacent to the valley. 
“Third — ^^The sandy soil, oontaininig an excess of the sand from the foot- 
hills. 
“The adobe soil is most difficult to cultivate, is plastic, and is generally 
supposed to contain a larger amount of alkalies than either of the other 
soils. The sandy soil is regarded as the best adapted for vegetables and 
alfalfa, while the sandy loam, which is the predominating soil, is used 
for various crops.” 
.178a. 
Texas Soils: A Study of Oliemical Compositiou. 
Bulletiu Ho. 25 , Texas AgTicultural Experiment Station. 
Bryan, 1892. 
.Discussion of the praetioal benefit of soil analysis to the farmer. Direc- 
tions for collecting samples. iClassifieations : .Soils of the State of six 
different types. ’1st — The 'Coast Belt. 2nd — iThe East Texas Belt. 3rd — 
The Black Prairie Belt. 4th — ^^The Ft. Worth Prairie Belt. 5th — 'The Pan* 
handle .Soils. 6th — The Alluvial Soils. 
The Coast Belt. Analyses of Soils: (No. I, from Rusk, Cherokee Co.; 
'No. dl, from 'Colmesneil, Tyler Co. 
ELEMENTS. 
No. 1. 
No. II. 
Surface 
Subsoil. 
Surface 
Subsoil. 
Mnist",!! rf* 
0.8 
2.05 
9(5.212 
0.776 
Trace 
Trace 
Trace 
Trace 
Trace 
Trace 
Trace 
Trace 
0.4 
0.73 
97.764 
0 931 
0.009 
Trace 
Trace 
Trace 
Trace 
Trace 
Trace 
Trace 
0.37 
1.18 
97.584 
j- 0.75 
0.3 
0.67 
98.168 
0.78 
'Volatile and organic matter 
Insoluble matter and sand 
Iron oxide 
AlnminH, oxide 
Calcium oxide 
Mn.gnesium oxide 
0.079 
Trace 
Trace 
Trace 
Trace 
Sulphuric acid 
Trace 
Trace 
Trace 
Trace 
Phosphoric acid 
Potash 
Soda 
Ca.rhonic a.cid 
Analyses: No. I, Creek Bottom Land, Tyler Co.; No. II, Valley Land, 
Cherokee Co. 
