The Spiritual Exercises of St. Ignatius of Loyola, [1914], at sacred-texts.com
Note. Sometimes, although the one who is exercising himself is strong and disposed, it helps to make a change, from this second day up to the fourth inclusively, in order better to find what he desires, taking only one Contemplation at daybreak, and another at the hour of Mass, and to repeat on them at the hour of Vespers and apply the senses before supper.