Although Glen did not know much about soldiers, or the meaning of military forms, he was somewhat surprised to see the guard at the main entrance of the fort turn hurriedly out and present arms as they clattered in past them. He quickly forgot this incident though, in his admiration of the interior, now opened before him. It was a large square, enclosed on all sides by low comfortable-looking buildings of adobe, neatly whitewashed, and in some cases provided with green blinds and wide piazzas. A hard, smooth driveway ran in front of them, and the middle of the enclosure was occupied by a well-turfed parade-ground, at one end of which stood a battery of light field-pieces. The chief beauty of the place lay in a little canal of crystal water, that ran entirely around the parade-ground. It was as cool and sparkling as that of its parent mountain stream, flowing just beyond the fort, and the refreshing sound of its rippling pervaded the whole place.