Swedenborg was gifted with peculiar powers of respiration. From early childhood, when on his knees at prayer, and afterwards when engaged in profound meditation, he found that his natural respiration was for the time suspended. As we have seen in his work on the “Animal Kingdom,” his attention to the correspondence between thought and respiration had been of long continuance,—probably from the fact that his own system supplied him with such constant illustrations of its nature. This power of suspended respiration under deep thought, common to all men, was preternaturally developed in Swedenborg. At this period he discovered the use to which these peculiar powers of his were to be applied; for he writes: “My respiration has been so formed by the Lord, as to enable me to breathe inwardly for a long period of time, without the aid of the external air; my respiration being directed within, and my outward senses, as well as actions, still continuing in their vigor, which is only possible with persons who have been so formed by the Lord. I have also been instructed that my breathing was so directed, without my being aware of it, in order to enable me to be with spirits, and to speak with them.” Those who have studied mesmerism and clairvoyance know many facts that confirm and illustrate this position of Swedenborg’s with regard to respiration; and it is quite evident that the Hindoo Yogi are capable of a similar state. There is this great difference, however, between such instances and the case of Swedenborg, that his powers were natural, and continuous in their exercise, and not sought after and induced by himself; while theirs are only occasional, and are frequently brought about by artificial means. Swedenborg’s intromission into the spiritual world was a gradual process; and for this reason the date of his illumination is variously given, ranging between 1743 and 1745. It appears, however, that he came into the full exercise of his spiritual seership while living in London.