This is an interesting analysis of how a magic trick works in terms of psychological processes. A better understanding of the underlying science does help the performing magician.
Translated from the German by Mrs. Emily S. Boyer. The original German essay appeared in Psychologische Skizzen by Edmund W. Rells, which was a pseudonym of Max Dessoir.
1st edition 1893, PDF 21 pages.
word count: 11956 which is equivalent to 47 standard pages of text