When studying man's nature with the idea of understanding the genesis of his onlooker-consciousness, it will be remembered, we had to examine the ordering of his consciousness into waking, dreaming and sleeping in the different members of his organism. We recognized three different organic systems, the sensory-nerve system, the rhythmic system and the metabolic-limb system, as the bodily foundation of three different soul activities. These are the thought-forming activity which belongs to waking consciousness; the feeling activity which belongs to dream consciousness; and the willing activity which belongs to sleep consciousness. We then saw in these three systems representatives of the three alchemical functions - 'sulphurous' in the metabolic, 'saline' in the nervous, 'mercurial' in the mediating rhythmic system.