TRANSCRIBER’S NOTE

The numbers in the right margin refer to the page numbers of the original printed book, they appear just where the corresponding page begins, e.g., page 113 contains the text between “p. 113” and “p. 114”.

The illustrations in the printed book were placed in unnumbered pages inserted between the numbered text pages (the first illustration was in the frontispiece). In this version the illustrations have been inserted right after the passage they refer to.

At the end of the book there are several pages of advertisement for other books of the publisher, these pages have an independent numbering in the printed book, here they are numbered 1′–22′.

In the present edition some typographic errors or inconsistencies have been corrected. In the HTML version these corrections are marked with a dotted underline, and the printed text usually appears in a “pop-up hint” when hovering the cursor on it.