It is interesting to here follow him in his line of thought and to see how well he understood how to combine his anatomical and clinical experiences: With the magnifying glass one can see how the nerve-fibres spring forth from the cortical substance like a brook from its source; if now the cortical substance be injured (as in the case of certain brain diseases, and which one may clearly see upon autopsy), then the injury is spread through the nerves connected with the cortex and at last all the way down to the muscles, and that, he thought, explained the motor disturbances.[86] And further ... when one or several of the ›Cerebellula› of the cortex are destroyed, then the damage is spread more immediately only to their proper nerves and muscles.[87] In this manner did SWEDENBORG synthesize his anatomical, pathological-anatomical and clinical experiences and extracted from them his conclusions, and by them he arrived at essentially the same conception, as our times, of the principles of the nervous system, its cellular structure. He did not indeed employ the same nomenclature for the nerve-cells and their long processes, as we do; but the matter itself: the nature of the nerve-cells as elementary organs of the nervous system, the intimate connection between the nerve and its cell-body, indeed even its dependence upon it in regard to nourishment, etc., he was able to clearly grasp in this way,—and this more than a century before our modern theory of these relationships, the ›neurone-theory› saw the light. CONCLUDING SUMMARY. I hereby conclude my presentation of the grounds upon which SWEDENBORG appears to have founded his doctrine of the cerebral cortex as the seat of the soul’s activity. I. It has here been my endeavour to show, that his _first_ general statement that the centres of the psychical functions are to be found in the cortex was a conclusion, which he derived from three premises, secured in different ways: The _1st_ premise was a conclusion drawn from the clinical observations, post mortem discoveries and results obtained from experiments on animals, which he had collected from literature; The _2nd_ premise was a summing up of the comparatively recent discoveries in microscopic cerebral anatomy, and The _3rd_ was an hypothesis, concerning the continuous connection between the cortical elements and the fibres of the cerebral medulla, by which an easy communication was established between those elements and the distributions of the nerves in the various parts of the body. In his conclusions from these premises SWEDENBORG had some guidance in preceding authors, who placed at least the sensory function in a certain connection with the cortical substance.