and grew restless.

"What do you call the colour of your skin, Haunte, as I saw it in
daylight? It struck me as strange."

"Dolm," said Haunte.

"A compound of ulfire and blue," explained Corpang.

"Now I know. These colours are puzzling for a stranger."

"What colours have you in your world?" asked Corpang.

"Only three primary ones, but here you seem to have five, though how
it comes about I can't imagine."

"There are two sets of three primary colours here," said Corpang,
"but as one of the colours--blue--is identical in both sets,
altogether there are five primary colours."

"Why two sets?"

"Produced by the two suns. Branchspell produces blue, yellow, and
red; Alppain, ulfire, blue, and jale."

"It's remarkable that explanation has never occurred to me before."

"So here you have another illustration of the necessary trinity of
nature. Blue is existence. It is darkness seen through light; a
contrasting of existence and nothingness. Yellow is relation. In