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This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.

Printing errors found in the first part have been diligently corrected, and here and there a word has been changed; otherwise, however, not a single change of any importance has been made. Consequently, those who already own this first part from the previous first printing do not find it necessary to purchase it again. The aforementioned clerical and printing errors of the first part have also already been indicated at the end of the second part, and can be corrected in the first printing based on that list.
Written at Stadthagen on December 16,