Sholmes experienced that slight fluttering of the heart which always announced to him, in the clearest manner, that he had discovered the road which leads to victory. That ray of truth, that feeling of certainty, never deceived him.
With nervous fingers he hastened to examine the balance of the book. Very soon he made another discovery. It was a page composed of capital letters, followed by a line of figures. Nine of those letters and three of those figures had been carefully cut out. Sholmes made a list of the missing letters and figures in his memorandum book, in alphabetical and numerical order, and obtained the following result:
CDEHNOPEZ—237.
“Well? at first sight, it is a rather formidable puzzle,” he murmured, “but, by transposing the letters and using all of them, is it possible to form one, two or three complete words?”
Sholmes tried it, in vain.
Only one solution seemed possible; it constantly appeared before him, no matter which way he tried to juggle the letters, until, at length, he was satisfied it was the true solution, since it harmonized with the logic of the facts and the general circumstances of the case.
As that page of the book did not contain any duplicate letters it was probable, in fact quite certain, that the words he could form from those letters would be incomplete, and that the original words had been completed with letters taken from other pages. Under those conditions he obtained the following solution, errors and omissions excepted:
REPOND Z—CH—237.
The first word was quite clear: répondez [reply], a letter E is missing because it occurs twice in the word, and the book furnished only one letter of each kind.
As to the second incomplete word, no doubt it formed, with the aid of the number 237, an address to which the reply was to be sent. They appointed Saturday as the time, and requested a reply to be sent to the address CH. 237.