831. Those spirits are above the head, quite high up - not directly overhead, but a little toward the front, very little. They are good spirits, and they, too, spoke with me, quite pleasantly; for they operate, even speak, with a very pleasant flowing motion. They said that they constantly aspire to come to heaven, for they are not aware that they had been in heaven, and then been removed so as to be better perfected, thus returning once again into heaven when the heterogeneous parts have been cast out from them. The case is just as it is with that fluid in the ventricles, part of which is absorbed by the choroid plexus: part is expelled from them, part seeps elsewhere; part passes over into the third ventricle under the pineal gland and thus through the infundibulum toward the pituitary gland, where it is separated into three quantities, which are borne through various paths, canals and cavities, towards the jugular vein, going to meet the chyle coming up through the thoracic duct. Mingled together there, they are carried toward the heart, thence into the lungs, then back into the left ventricle [of the heart] and thus onward, part toward the head through the carotid arteries, part downward toward all the internal organs of the body. All these events conspire to the purpose of forming the purer blood, or animate spirit, and thus the red blood, so that by a uniting of material and spiritual elements, they may bring about a harmonious life. 1748, the 18th day of February.