 If the northeast corner was not determined by the hackberries, there was nothing to interfere with the location of the Moreno grant in exact accordance with the field notes except the one thing of extending the second line far enough to meet the conceded location of the eastern boundary.It did not depend on anything requiring the exercise of judgment on the part of the jury; it was a matter of course.If the position of the eastern line had not been discovered at all, and nothing had been known but the beginning corner, the field notes would have furnished the only guide for locating the survey.