...and to Chihuahua, if necessary. For this purpose, his riding horse and two of Ridley's had been kept in good condition and unsaddled. He now mounted afresh, and took his place, with Mackenzie and Ryerson , who had been selected to accompany him; Ryerson for his familiarity with the country, Mackenzie for his personal devotion to General Johnston, and for the possession of every quality to fit him for ...