Mrs. Evelegh was rich—'left comfortably,' as the phrase goes, but with a clause which prevented her marrying again without losing her fortune; and I could gather from various hints that Dr. Fortescue-Langley, whoever he might be, was bleeding her to some tune, using her soul and her inner self as his financial lancet. I also noticed that what she said about the bangle was strictly true; generally bright as a new pin, on certain mornings it was completely blackened. I had been at the chalet ten days, however, before I began to suspect the real reason. Then it dawned upon me one morning in a flash of inspiration. The evening before had been cold, for at the height where we were perched, even in August, we often found the temperature chilly in the night, and I heard Mrs. Evelegh tell Cécile, her maid, to fill the hot-water bottle. It was a small point, but it somehow went home to me. Next day the bangle was black, and Mrs. Evelegh lamented that her inner self must be suffering from an attack of evil vapours.
I held my peace at the time, but I asked Cécile a little later to bring me that hot-water-bottle. As I more than half suspected, it was made of india-rubber, wrapped carefully up in the usual red flannel bag. 'Lend me your brooch, Elsie,' I said. 'I want to try a little experiment.'
'Won't a franc do as well?' Elsie asked, tendering one. 'That's equally silver.'
'I think not,' I answered. 'A franc is most likely too hard; it has base metal to alloy it. But I will vary the experiment by trying both together. Your brooch is Indian and therefore soft silver. The native jewellers never use alloy. Hand it over; it will clean with a little plate-powder, if necessary. I'm going to see what blackens Mrs. Evelegh's bangle.'
I laid the franc and the brooch on the bottle, filled with hot water, and placed them for warmth in the fold of a blanket. After déjeûner, we inspected them. As I anticipated, the brooch had grown black on the surface with a thin iridescent layer of silver sulphide, while the franc had hardly suffered at all from the exposure.
I called in Mrs. Evelegh, and explained what I had done. She was astonished and half incredulous. 'How could you ever think of it?' she cried, admiringly.
'Why, I was reading an article yesterday about india-rubber in one of your magazines,' I answered; 'and the person who wrote it said the raw gum was hardened for vulcanising by mixing it with sulphur. When I heard you ask Cécile for the hot-water-bottle, I thought at once: "The sulphur and the heat account for the tarnishing of Mrs. Evelegh's bangle."'
'And the franc doesn't tarnish! Then that must be why my other silver bracelet, which is English make, and harder, never changes colour! And Dr. Fortescue-Langley assured me it was because the soft one was of Indian metal, and had mystic symbols on it—symbols that answered to the cardinal moods of my sub-conscious self, and that darkened in sympathy.'
I jumped at a clue. 'He talked about your sub-conscious self?' I broke in.
'Yes,' she answered. 'He always does. It's the key-note of his system. He heals by that alone. But, my dear, after this, how can I ever believe in him?'