Sulphur and phosphorus are thus seen to represent two polarically opposite tendencies with regard to the levity-gravity coherence which breaks up when combustion occurs. In the case of sulphur, the ponderable and imponderable entities appear to cling together; in the case of phosphorus, they seem to be anxious to part. These two different tendencies - which are characteristic of many other substances and represent a basic factor in the chemical happenings of the earth - are in their own way a pair of opposites. Since each of them represents in itself a relationship between two poles of a polarity-gravity and levity - so in their mutual relationship they represent a 'polarity of polarities'. In Fig. 4 an attempt has been made to represent this fact by a symbolic diagram.