Being compelled to keep a reckoning of our latitude, by which our travel was partly governed, and the sun being now too high at noon for the use of the artificial horizon, we had to be guided entirely by observations of the meridian altitude of the moon, planets, or fixed stars. At Gypsum creek our latitude was 360° 10' - being the utmost northing we had made. As we were now about thirty miles north of the parallel of Santa Fé, we had to steer, henceforth, a few degrees south of west in order to bring up on our direct course.