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Updated: May 18, 2025
Beside the instrument on the table lay some more glass- capped tubes and strewn about were samples of raw sugar. "It is a saccharimeter," explained Kennedy, also looking at it, "an instrument used to detect the amount of sugar held in solution, a form of the polariscope. We won't go into the science of it now. It's rather abstruse."
It was just a bit, but he dissolved it in some liquid from a bottle on the table, filled one of the clean glass tubes, capped the open end, and placed this tube in the saccharimeter where the first one I noticed had been. Carefully he lighted the lamp, then squinted through the eyepiece at the tube of liquid containing what he had derived from the cartridge.
He made some adjustments, and as he did so his face indicated that at last he began to see something dimly. The saccharimeter had opened the first rift in the haze that surrounded the case. "I think I know what we have here," he said, briefly, rising and placing the tube and its contents in his pocket with the other things he had discovered. "Of course it is only a hint.
"Not one person in ten thousand ever thinks of its mysterious nature or ever attempts to investigate it. In fact, most of us are in utter darkness as to light." He paused, tapped the machine and went on, "This is a polarimeter a simple polariscope a step beyond the saccharimeter," he explained, with a nod at Sandoval.
In this instrument a little needle did the same thing. Pairs of little wire-like strings ran to the instrument. Kennedy had finished adjusting another instrument which was much like the saccharimeter, only more complicated, when the racing of an engine outside announced the arrival of the party in one of the police department cars.
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