Of particular interest are the various ideas to how to transmit information secretly.
- INTRODUCTION
- MISCELLANEOUS EXPERIMENTS
- The Slave Bangle
- Camouflage
- Two Ropes And A Ring
- A String Variation
- A Marked Pack
- Three Good Tricks (Will Goldston)
- PROBLEMS WITH CARDS
- Removing Under Difficulties
- A Problem With Cards
- A Card Square
- Values
- A Puzzling Location
- Suitable "Key" Card
- TRANSMISSION SIGNALS
- Hands Of The Secret Service
- Stage Billet Reading
- The Interpreter
- The Roll Call
- The Carrier
- Intelligent Fingers
- Reconstruction
1st edition 1925, 28 pages; PDF 31 pages.word count: 7166 which is equivalent to 28 standard pages of text