The literature of autogenous welding technique has been enriched lately in many valuable ways, and there exist a large number of works which cover this field. Autogenous welding is a process intended for general introduction both in small workshops and in large factories. The range of welding technique is so wide that a thorough study of the process requires extensive research which makes great demands on the time of the reader. A pocket book of brief compass will be welcome to the works engineer, to the works foreman, and to the practical autogenous welder; in which the most im portant elements of the process are placed together in an easily available manner, and which shall be a faithful companion and a reliable adviser in connection with the various questions arising in practice.