Then he added a few drops of some colourless liquid to that in the retort, and the solution at once assumed a pale green hue. He boiled it again for three minutes by his common, metal watch, then, having drained it off into a shallow glass bowl to cool, blew out his lamp, and I followed him back into his small, cosy, but rather stuffy little den.
“Well?” he inquired. “You have called at her ladyship’s—eh?”
“Yes,” I replied, stretching myself in one of his rickety chairs; “but you were there before me. What have you discovered?”
“Nothing.”
“But that experiment I have just witnessed? Has it no connexion with the mystery?”
“Yes, some slight connexion. It was, however, a failure,” he grunted, still speaking with his strong accent.
“You experienced the same sensation there to-day, I hear?” I said.
“H’m, yes; but not so strong.”
“And the same injection cured you?”
“Of course. That, however, tells us nothing. We cannot yet ascertain how it is caused.”