When we next went to his house for instruction in details of the school of the engineer soldier, I asked him how many steps we were making a minute when he first ordered "faster". He said "about 45". I replied: "That's it. We have found out what was the matter. You counted only the left foot. We were marching in 'common time' when you ordered us to move 'faster'; and you pushed us to nearly twice that rate". "The cat was out of the bag." The Captain saw it at once and laughed heartily over the error he had fallen into in the latter part of his "first appearance" as captain, in drilling the company as infantry. He made no such mistake thereafter; and the men never knew of his "count", watch in hand. On the 26th of September, 1846, we sailed from New York, 71 rank and file, for Brazos Santiago, under orders to report to General Taylor, commanding the U. S. army in Mexico. We landed at Brazos on the 12th of October, remained at that point for several days, proceeded thence to the mouth of the Rio Grande and arrived at Carmargo on the 2nd of November. There the company was delayed for several weeks because transportation for the engineer train to the headquarters of the Army at Monterey, was not then available. The Company left Carmargo for Brazos, on the 29th of November, under orders to proceed to Tampico by sea, but was ordered to return to Matamoros with a portion of its tools, and march, via Victoria, to Tampico--the bulk of its train to be transported to the latter place by water. Whilst detained at Carmargo instruction in the school of the engineer soldier was kept up, and infantry drills were constantly practiced. During that time several thousand troops were in camp near Carmargo, and the men of the engineer company learned that they were, by the line of the army, styled: "the pick and shovel brigade". Their officers advised them not to care for this epithet but, "take it easy, continue to endeavor to become _model_ infantry, and engraft on that a fair knowledge of the duties of the engineer soldier". They were assured that "for heavy work", details would have to be made from the line of the army; and these details would, for the time, constitute the real "pick and shovel brigade" under the control of engineer officers, assisted by trained engineer soldiers. When the time came for close fighting the engineer company would be at the front. The troops stationed on the Rio Grande during the fall of 1846, suffered greatly from Mexican diarrhoea, fevers and other diseases. Several men of the engineer company died, and Captain Swift and twenty of the men were left in hospital at Matamoros, when the company finally left the latter place.