A person who has an incurable cancer is a person whose death may be predicted with certainty and its date fixed within comparatively narrow limits.
"And now observe the remarkable series of coincidences that are brought into light when we consider this peculiarity of the disease.

Mrs.Wilson died on the twelfth of March of this present year.

Mr.Jeffrey's second will was signed on the twelfth of November of last year; at a time, that is to say, when the existence of cancer must have been known to Mrs.
Wilson's doctor, and might have been known to any of her relatives who chose to inquire after her.
"Then you will observe that the remarkable change in Mr.Jeffrey's habits coincides in the most singular way with the same events.

The cancer must have been detectable as early as September of last year; about the time, in fact, at which Mrs.Wilson made her will.

Mr.Jeffrey went to the inn at the beginning of October.