CONTENTS, IX 
Section.—Absence of vegetation.—Limestone.—Hot spring.—Palm tree.— Cactacex.— Drifting sand.—Barley field.— 
Deep well.—Sand hills. —Blue clay, forming a hard surface.—Water-line on the rocks.—Calcareous incrustation.—Evi- 
dences of an ancient lake.—Small ici an fresh-water species —Cohuilla Indians. —Villages and springs.—Tradition of a 
great sheet of water covering the valley.—Saline incrustations —Soil of the Howe] en —Water-line, its elevation.— 
Thick calcareous incrustation.— View of the expanse of the rt.—Clearness of air.—Shadows of the mountains.— 
Slope bordering the mountains.—Bottom of the ancient lake "us ines in ihe clay. ار‎ ae of strata holding concre- 
tions. nn nn creek.—Shells.—Silicitied wood.—Sand drifts —Drift of volcanic rocks. ee 
strata of Carrizo creek.—Agave.— Palm springs.—Vallecito.— Gneiss and mica slate.— Vegetation. — San F 
Indians.—Rain.—Warner's Ha — Oak trees and grass —Warm springs.—Granite 
CHAPTER IX. 
Warner's to the Colorado desert.—Colorado desert to the mouth of the Gila.—Camp Yuma and 
the vicinity. 
en:‏ و و 
Warner’s to San Felipe. —Granitic veins.—Granite and gneiss.—Valley of Carrizo creek.—Drift.—Fossils.—View of the | 
desert —Signal mountain. —Mirage.—Distorted images of mountains. mo e the desert —Fossil shells. —Polished 4 
pebbles. Ren: wood. —Big lagoon.—Little lagoon.— Water-courses. —New river.—Alamo Mocho.— Well.—Skeletons 2 
of cattle.—Mezquit.— Larrea Mexicana.—Sand.— Mountains. —Pilot Kn i-r wells.—Cook's well.—Continuous 
bank or terrace. ER SEHE AO danes.— Willows and cotton-woods.—Indian Moris s —Ferülity of the 
soil.—Colorado river.—Red mud or silt.— Pilot Knob.-—Blackness and polish of the roc —V 
ocks.—Travertin.— Agate.—Pebbles filled with fossils. —Conglomerate.—Plain of ihe pues ی‎ —Fort Yuma.— 
Porphyritie ga —Chimney Peak.—Section of the butte at Fort Yuma.—Section along the river. Er strata.— 
of the fissure in the Butte. —Earthquakes.—Mud Volcano.— Mountains nearest the 一 Plain covered 
ih veld pebbles. 3 surface.—Agates and porphyries.—Silicified wood.—Gneiss. ae 3 the desert and E 
sand hill = 
E 
CHAPTER X. D 
Fort Yuma to Carrizo Creek.—Carrizo Creek to San Diego. E 
UA 
Ve ad ORE AMAT 
Remarkable cleft in the rocks of Pilot Knob.—Terrace.—Sand-hills.—Extent and height of the hills.—Rain.—Rounded form 
of the V AGER of sand.—Agate and quartz.—Sand-storm.—Silicified wood.—Argillaceous strata.—Approach to Carrizo 
eek.—Barr وج‎ west of the Desert.— Erosion of Carrizo creek.—Banks of horizontal strata.—Fractures of the 
bu due t وج‎ es, —Gypsum.—$Stratum of marine shells.—Silicified wood polished by sand.—Palm springs.— 3 
Vegetation of the cues of the creek.— Granite and gneiss —Vallecito.—Basin-shaped valleys at pesa elevations.— E 
Gneiss and mica slate.—Veins of feldspar traversing the rocks.—Large crystals of tourmaline 一 -San Felipe.—Havine near : 
the Indian village.— Travertin of the creek.— Santa Isabel. —Granite. —Syenite.—Quartz veins and xpi of golg.— 
San Pasqual.—Rounded hills of stratified formations.— Trap dyke. -T —Slope oe the nest — aep 
of erosion.—Beach-shingle. —Fossil shells.—Punta Loma.—San Pedro.— Bluff o ill 
Hard sandstone.—Sun-cracks.—Modern deposits containing shells.—Bitumen. i Santa Barbara.—Fossils. 
