INDEX, 
49 
Page. 
Rhine, loess of.- --. 28 
Rivers and streams of the Llano -...-.-.-.. 10 
Rocky Dell week ..-----.---- 9 
Rogers, H. D .. 18 
Roman pearls ........ —--------- 34 
S, 
Sacramento river, gypsum on...-.-. 16 
Saline lakes ________ 20,21 
of California_______ 21 
Sand hills . 19 
of the Colorado Desert... 19 
water among.-. 20 
Satin spar ----------- 32,34 
Section of the Llano------..... 16 
of strata at Port Belknap....... 27 
note on. 43 
Selenite .16,18, 32, 33 
Shubenacadie, gypsum_______ 18 
Shumard, Dr. G. G . 16, 25, 31 
Silver, in lead ores. 37 
Sierra Alto _____________ 15 
Sierra de los Alamos ... 8 
Snow _ 15 
Soil, along the Brazos...... 27 
Spirifer _________ —.. 26 
Springs ....____....... 10,21 
at the borders of the Llano.... 23 
Staked plain _________ 24 
Stevenson, Mr . 37 
Sulphuric acid _____________ 21,36 
Sulphide of sodium, in the water of springs_________ 21 
Sulphur . 21,38 
Sulphur Springs ________ 10, 21 
Sulphurous lakes .........__________ 20 
T, 
Table lands _........____ —.... —------....... 8 
elevation of..... 8 
Tanks qf water -----. 12,13,15 
in African deserts......—... 15 
Taplin, Charles L., quoted....... 40 
Taylor, Bayard, quoted.......... 15 
Terebratula - 26,32 
Tertiary --- 17,19,28 
fossils of Tuscany.......—.. 18 
conglomerate of the desert....... 20, 29 
drift of the Llano ......... 21 
reason for not representing it in the map and section.....-. 43 
sandstone of the Bernardino Sierra, California. 29 
coal in. 31 
Texas, Tertiary coal in. 31 
Thome's wells ________........................................ 14 
Trap rock . 12 
Trias ............ 17,25 
Trinity river, Cretaceous on. 40 
Tuomey, Professor.. ______......... 25 
Tiscany, gypsum. 18 
