Technological Dictionary

In cases where in one language a particular term is applicable to several professions industries etc. while the foreign equivalent varies according to the industry etc. in which it is used the particular branch of industry is noted in parenthesis in accordance with the Explanations of Abbreviations and Signs given at the beginning of the book. This reference has however been omitted where there can be no doubt as to the industry etc. covered by the term. Expressions which are preferred or are used almost exclusively in the United States are marked (A). I would like to sincerely thank all the individuals institutions firms etc. for their generous as- sistance in placing their excellent and valuable material at my disposal. Their ready co-operation has enabled me to include in this dictionary a large number of technical terms which have not to my know- ledge as yet appeared in any dictionary devoted to Engineering Agriculture Commerce or Communi- cations. The number of those who by making valuable original contributions available to me have added to the contents of this new edition is too large to permit of all their names being recorded here.