"I wouldn't say that," replied Thorndyke. "This is a legal case. Let me put an analogous medical case as being more within your present sphere. Supposing that a man should consult you, say, about a progressive loss of weight. He can give no explanation. He has no pain, no discomfort, no symptoms of any kind; in short, he feels perfectly well in every respect; but he is losing weight continuously. What would you do?"
"I should overhaul him thoroughly," I answered.
"Why? What would you expect to find?"
"I don't know that I should start by expecting to find anything in particular. But I should overhaul him organ by organ and function by function, and if I could find nothing abnormal I should have to give it up."
"Exactly," said Thorndyke. "And that is just my position and my line of action. Here is a case which is perfectly regular and straightforward excepting in one respect. It has a single abnormal feature. And for that abnormality there is nothing to account.
"Jeffrey Blackmore made a will. It was a well-drawn will and it apparently gave full effect to his intentions. Then he revoked that will and made another. No change had occurred in his circumstances or in his intentions. The provisions of the new will were believed by him to be identical with those of the old one. The new will differed from the old one only in having a defect in
