close touch both with the authorities and with the Press, so that news is converging upon me from all parts. There is, in fact, a general and very insistent demand that I should come to London; but I see no good end to be served. From the accounts the poisonous effect begins with mental excitement; the rioting in Paris this morning is said to have been very violent, and the Welsh colliers are in a state of uproar. So far as the evidence to hand can be trusted, this stimulative stage, which varies much in races and in individuals, is succeeded by a certain exaltation and mental lucidity—I seem to discern some signs of it in our young friend here—which, after an appreciable interval, turns to coma, deepening rapidly into death. I fancy, so far as my toxicology carries me, that there are some vegetable nerve poisons"
"Datura," suggested Summerlee.
"Excellent!" cried Challenger. "It would make for scientific precision if
