"The method," remarked the other, "has been guaranteed by some of the greatest American men of science."
"What sentimentalists men of science are!" exclaimed Father Brown, "and how much more sentimental must American men of science be! Who but a Yankee would think of proving anything from heart-throbs? Why, they must be as sentimental as a man who thinks a woman is in love with him if she blushes. That's a test from the circulation of the blood, discovered by the immortal Harvey; and a jolly rotten test, too."
"But surely," insisted Flambeau, "it might point pretty straight at something or other."
"There's a disadvantage in a stick pointing straight," answered the other. "What is it? Why, the other end of the stick always points the opposite way. It depends whether you get hold of the s
