On the Summit of the Rocky Mountains--Crossing the Backbone of the
North American Continent--Review of the Journey--Graves Opened by
Wolves--Mutilated Bodies--An Unparalleled Journey of Hardship--The
Prospect Ahead--A Matter of Life and Death--Start Down the Pacific
Slope--Descending the Cliffs with Wagons--One Vehicle Slips and is
reduced to Kindling Wood and Scrap Iron--Into a New Climate--Change
in the Character of Vegetation--Wild Horses and Cattle--Attacked by
Wild Cattle--Several Men Hurt and one Mule Gored to Death--A Number
of Cattle Killed--Supply of Beef--Reach the Pan Pedro River--Traveling
Through a Heavy Growth of Mesquit and Chapparal--Approach the Mexican
Garrisoned Town of Tucson--News of Approach of a Large American Army
Sent to the Mexicans--Order Issued by Colonel Cooke.