THE SEVENTH EDITION. vii 



found in any language ; to Mr. HILARY BAUERMAN, who has brought 

 the articles ' Iron ' and ' Steel ' up to the most recent date, and to a 

 condition of great completeness ; and to Mr. JOHN DARLINGTON, who 

 has submitted to a complete revision all the articles connected with 

 Mining. Of the latter it may be safely said, that they, taken collec- 

 tively, form a description of the modes of obtaining and of preparing 

 the useful minerals for the market such as is not to be found in any 

 other work in the English language. 



My obligations to Mr. F. W. RDDLBR, who has assisted me in my 

 heavy labours of producing these volumes, are great. During a period, 

 when the disturbed condition of my health rendered it even dangerous 

 for me to give any prolonged fixed attention to the Dictionary, that 

 gentleman, with almost enthusiastic zeal, devoted his best energies to 

 the tedious details of the work, and gave me all the advantages of his 

 general and exact knowledge. 



With the aid that has been received, and the attention which has 

 been bestowed on this work, I feel that it may with confidence be 

 commited to the public, believing that it will be found a useful guide 

 in all those industries which are connected with the Arts, Manufac- 

 tures, and Mines. 



EGBERT HUNT, KR.S. 

 April 27, 1875. 



