The appearance of the will-o-the-wisps, Castor and Pollux, was held to be an argument that the tempest was caused by "a sulphurous spirit rarefying and violently moving the clouds, for the cause of the fire is a sulphurous and bituminous matter driven downwards by the impetuous motion of the air and kindled by much agitation". I quote this passage as justifying the suggestion that _sulphur_--the yellow and fiery--is radically _phur_, and that _brimstone_, or _brenstoon_, as Wyclif has it, may be the stone of Brim or Bren, which burns. The identification of Castor and Pollux with stars or _asters_, enables us to equate Castor as the White god or Day god, for _dextra_, the Latin for right, is _de castra_, _i.e._, _good great astra_. The white child in Fig. 266 is that on the _right_ hand of the _Bona Dea_: that Pollux was the dark, _sinister_, _sinistra_, or left-hand power, is somewhat confirmed by the fact that the Celtic Pwll was the Pluto or deity of the underworld. Possibly the Latin _castra_, meaning a fort, originated from the idea that Castor was the heroic Invictus who has developed into St. Michael and St. George. The _sin_ of _sinister_ may possibly be the Gaelic _sen_, meaning senile, and the implication follows that the dark twin was the old in contradistinction to the new god. The French for nightmare is _cauche_mar, the French for left is _gauche_, and it is the left-hand mairy, or fairy, in Fig. 266 which is the shady one. Not only does _gauche_ mean _left_, but it also implies awkward, uncanny, and inept, whence it is to be feared that the Gooches, the Goodges, and their affiliated tribes were originally "Blackfriars," and followers of the Black God. I have already suggested that the Gogs were unpopular among the Greeks, and the intensity of their feeling is seemingly reflected by the Greek adjective _kakos_[535] (the English _gagga_?), which means evil, dirty, or unpleasant. Castor and Pollux, or the Fires of St. Helen, were known along the shores of the Mediterranean as St. Telmo's Fires, the word Telmo being seemingly _t Elmo_ or Good Alma. By the Italians they are known as the Fires of St. Peter and St. Nicholas; Peter here corresponding probably to the _auburn_ Aubrey, and Nicholas to "Old Nick".