For SWEDENBORG, who had arrived at certainty with regard to the seat of the soul’s activity in the cerebral cortex, and not in the cerebral medulla!, and who through MALPIGHI and others had been led to see that _the fibres of the cerebral medulla_ were _continuations of the processes of the cortical elements_,—for SWEDENBORG it naturally lay very near at hand to _follow the fibres of the three regions of_ VIEUSSENS _out to the cortical substance_ on the surface of the brain; and so SWEDENBORG has his _three cortical lobes_! And to them, especially to the highest, he could now attribute the source of the soul’s life. When VIEUSSENS followed the nerve tracts of the corpora striata and capsula interna downwards, he found: that the _fibres of the uppermost region_ led down to the _posterior region of the spinal cord_; (›ad posticam spinalis medullæ regionem›);[77] that the _fibres of the middle region_, which were especially coarse and traversed the capsula interna and pons, forming thick tracts, could be clearly followed down into the _anterior portion of the spinal cord, (›in anticam spinalis medullæ partem›)_, where they came into connection with the anterior origins of the spinal nerves, (›ad antica nervorum spinalium principia›), also paying, on their passing through the medulla oblongata, ›necessary tribute›, (›necessarium vectigal›), as it is expressed, to certain of its nerves;[78]——See the figure 4!—— that the _fibres of the lowest region_ were distributed to certain _nerves, which proceed from the medulla oblongata_, and to _some of the anterior origins of the spinal nerves_ (›quædam illius pars ad quosdam e Medulla oblongata prodeuntes, altera vero ad antica nervorum spinalium principia›).[79] In SWEDENBORG’s time it was, however, known that the muscles which produce the movements of the head and face receive their nerves just from the medulla oblongata and the uppermost part of the spinal cord; and it therefore lay near at hand for SWEDENBORG, when he saw that paralyses arose when certain cortical regions were destroyed, to draw the conclusion, that the muscles and movements which belong to the _face and head_, depend more immediately upon the _lowest_ region of the third lobe of the cerebral cortex. And as it was also known that the muscles of the thorax and abdomen receive their nerves from the superior portion of the spinal cord, whither just the tracts of coarse fibres from the middle region of the brain could be followed, (see figure 4), so SWEDENBORG could likewise draw the conclusion from this that the muscles and movements which belong to the _thorax and abdomen_ depend more immediately upon the _middle_ region or lobe.