86 
Transactions Texas Academy of Science. 
Dumble^ Edwin T. 
of the Pecos River for irrigiation. Upon it have been grown fruits, vegeta- 
bles, grains and grasses, etc., and dhe yield has been of such a character, 
both in quality and lamount, as to encourage the eonstruction of canals 
and ditches and a considerable extension oif the irrigation facilities. The 
claim made by the operators of the experimental farm is that the manner 
of irrigation prevents the accumulation of the salt .to any hurtful extent. 
The plats are flooded with water and the porous nature of the soil permits 
rapid drainage. By this means, it is thought by them that the water, 
as it is applied, washes out the soluble salt left by former applications, 
and in turn leaves only labout the same quantity as before, as it is drained 
laway or .evaporates. 
^‘The facts, as I can learn them, are that up to the present, at least, 
no deleterious elfects are noticeable from the lapplication of the water. 
The crops continue to flourish, and there is no perceptible reason for 
expecting them to do otherwise while the water continues available as it 
is now. 
“That there is, however, an increase in the amount of salt in the land 
lafter irrigation is dully proved by the following analyses made of virgin 
soil and exactly similar soil near it which had been inrigated for three 
years. P. 24 . 
:\ 20 . 
First Annual Report of the Geological Survey of 'Texas> 1889. 
8 VO., pp. xci, 410'. PL X, and map. (Austin, 1890. 
Contents: Letter of Transmittal (L. L. Foster, Commissioner of Agri., 
Ins., iStatistics and History, to Hon. L. 'S. Ross, Governor). Table of Con- 
tents. Table of Hlustrations. Letter of Transmittal, E. T. Humble, State 
Geologist, to 'Hon. L. L. Poster, Commissioner, etc. (Report of the State 
Geologist, E. T. Humble. Reports of the Geologists: W. von Streeruwitz, 
W. F. Cummins, R. T. Hill, Theo. B. Comstock. 
Accompanying Papers : Preliminary Report on the Geology of the Gulf 
Tertiary of Texas, by R. A. F. Penrose, Jr. A Brief Hescription of the 
Cretaceous Rocks of 'Texas and their Economic Uses, by Robt. T. Hill. 
The Southern Border of the Central Coal Field, by W. P. Cummins. The 
Permian of Texas and its Overlying (Beds, by 'W. F. Cummins. A Pre- 
liminary Report on the Coal Fields of the Colorado River, by Ralph S. 
Tarr. Geology of Trans-Pecos Texas — ^Preliminary Statement — by W. von 
Streeruwitz. A Preliminary Report on the Central (Mineral Region of 
Texas, by Theo. B. Comstock. 
This volume is noticed in the Amer. Naturalist, Vol. XXVI, Jan., 1892, 
p. 47. 
1^1. ' 
Report of State Geologist. 
First Annual Repiort of the Geological Survey of Texas, pp. 
xvii-lxxv. 1890. 
Contents : Organiziation. Scope and Plan of the 'Survey. Plan of Op- 
erations, Work of the First Year; Topography, Geology, Laboratory, 
