An Illustrations-list has been added after the Contents-list.
A few illustrations didn't have a description. A description has been provided by the transcriber to make reference to it possible. To distinguish them from the other illustrations, the description is put in lower-case.
Several illustrations depict tables with numbers. These tables are converted to text in the plain text version.
There are two "misprints" in the illustrations depicting tables:
1) The illustration of the unsolved cipher should show an extra seconds-mark. You can see this by comparing it with the illustration of the solved cipher, where you see the extra seconds-mark next to the second degrees-mark.
2) The solved cipher shows totals in the top-row and the last column on the right. The total in the top-row, 6th square, should be "191" instead of "19".
End of the Project Gutenberg EBook of The Treasure of the 'San Philipo', by Percy F. Westerman