Page:The Poison Belt - Conan Doyle, 1913.djvu/75

 52  at the rate of some millions of miles a minute. Our young friend has expressed the cause of all our troubles and perplexities in a single word, 'Poison.'"

We looked at each other in amazed silence. No comment seemed to meet the situation.

"There is a mental inhibition by which such symptoms can be checked and controlled," said Challenger. "I cannot expect to find it developed in all of you to the same point which it has reached in me, for I suppose that the strength of our different mental processes bears some proportion to each other. But no doubt it is appreciable even in our young friend here. After the little outburst of high spirits which so alarmed my domestic I sat down and reasoned with myself. I put it to myself that I had never before felt impelled to bite any of my household. The impulse had then been an abnormal one. In an instant I perceived the truth. My pulse upon