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Rh when at last Gordon-Nasmyth reappeared and mentioned in an incidental way that he had been to Paraguay on private (and we guessed passionate) affairs, the business of the "quap" expedition had to be begun again at the beginning. My uncle was disposed to be altogether sceptical, but I wasn't so decided. I think I was drawn by its picturesque aspects. But we neither of us dreamt of touching it seriously until Capern's discovery

Nasmyth's story had laid hold of my imagination like one small, intense picture of tropical sunshine hung on a wall of grey business affairs. I kept it going during Gordon-Nasmyth's intermittent appearances in England. Every now and then he and I would meet and reinforce its effect. We would lunch in London, or he would come to see my gliders at Crest Hill, and make new projects for getting at those heaps again, now with me, now alone. At times they became a sort of fairy-story with us, an imaginative exercise. And then came Capern's discovery of what he called the ideal filament, and with it an altogether less problematical quality about the business side of quap. For the ideal filament needed five per cent. of canadium, and canadium was known to the world only as a newly separated constituent of a variety of the rare mineral rutile. But to Thorold it was better known as an element in a mysterious sample brought to him by me, and to me it was known as one of the elements in quap. I told my uncle, and we jumped on to the process at once. We found that Gordon-Nasmyth, still unaware of the altered value of the stuff, and still thinking of the experimental prices of radium and the rarity value of cerium, had got hold of a cousin named Pollack, made some extraordinary transaction about his life