This book is a translation of the Dhutanga practices of Venerable Acharn Mun Bhuridatta, and it was written by Venerable Acharn Maha Boowa Ñanasampanno Thera, as a companion volume to the “Biography of Venerable Acharn Mun”. The author of this book, Venerable Acharn Maha Boowa, who is now (1995) already 82 years old, has been ordained for 62 years. He founded Wat Pa Baan Taad 40 years ago and has lived there ever since as the Abbot. He first went to stay with his teacher, Venerable Acharn Mun, in 1941 and learnt the ways of practice and meditation from him for 8 years. Much of what he learnt has been written about in this book so that the reader can get a fair idea of what hardships and difficulties he had to undergo.