CHAPTER IV.
President of Mexico Resigns, and Paredes Is Elected--Mexican 41 Troops Concentrating at Matamoras--Taylor Marches to the Rio Grande--Rattlesnakes--Mirage--Wild Horses--Taylor Concentrates His Troops at Arroyo, Colo.--Bull Fight--Mexicans Flee--Taylor Goes to Point Isabel--Join Gen. Worth--Field Works--Arrival of Gen. Ampudia--Orders Taylor to Leave--Taylor Declines--Col. Cross Murdered--Lieut. Porter Killed--Gen. Arista Arrives--Declares Hostilities Commenced--Capts. Thornton and Hardee Captured