The Magic of the Horse Shoe is far more than a single-issue title. Lawrence' greatest work, here, delves deep into folklore in general, from ancient to modern and in multiple continents. This book contains significant inclusions regarding luck (and customs associated with the concept), the spiritual use of salt and its origins, and a bit of numerology after a fashion. It has as well interesting primary sources quoted here, dealing with things as strange as the habit of medieval people to put animals on trial.