But when we read the second sentence with the words "devised by the inventor," the meaning is so plain that it is astonishing that any one at all familiar with the facts could have been misled.
The first form of the alphabet which was attached to Morse's caveat of October 3, 1837, is shown in the drawing of the type in the accompanying figure.
[Illustration: ROUGH DRAWING OF ALPHABET BY MORSE Showing the first form of the alphabet and the changes to the present form] It has been stated by some historians that the system of signs for letters was not attached to the caveat, but a careful reading of the text, in which reference is made to the drawing, will prove conclusively that it was.

Moreover, in this caveat under section 5, "The Dictionary or Vocabulary," the very first sentence reads: "The dictionary is a complete vocabulary of words alphabetically arranged and regularly numbered, _beginning with the letters of the alphabet_." The italics are mine.

The mistake arose because the drawing was detached from the caveat and affixed to the various patents which were issued, even after the first form of the alphabet had been superseded by a better one, the principle, however, remaining the same, so that it was not necessary to patent the new form.
As soon as it was proved that it would be simpler to use the letters of the alphabet in sending intelligence, the first form of the alphabet was changed in the manner shown in the preceding figure.

Exactly when this was done has not been recorded, but it was after Vail's association with Morse, and it is quite possible that they worked over the problem together, but there is no written proof of this, whereas the accompanying reproduction of calculations in Morse's handwriting will prove that he gave himself seriously to its consideration.
The large numbers represent the quantities of type found in the type-cases of a printing-office; for, after puzzling over the question of the relative frequency of the occurrence of the different letters in the written language, a visit to the printing-office easily settled the matter.
This dispute, concerning the paternity of the alphabet, lasting for many years after the death of both principals, and regrettably creating much bad feeling, is typical of many which arose in the case of the telegraph, as well as in that of every other great invention, and it may not be amiss at this point to introduce the following fugitive note of Morse's, which, though evidently written many years later, is applicable to this as well as to other cases:-- "It is quite common to misapprehend the nature and extent of an improvement without a thorough knowledge of an original invention.

A casual observer is apt to confound the new and the old, and, in noting a new arrangement, is often led to consider the whole as new.