VI PREFACE . 



The Subject Index has been based upon such an examination of the 

 original articles as was possible with a reasonable expenditure of time, 

 and is based therefore upon the salient points rather than upon min- 

 ute details, although an attempt has been made to carry the subdivi- 

 sion of subjects as far as possible. Under the heading "Applications 

 of Quantitative Methods" (page iii et seq.),on\y those references are, 

 in general, included in which the title of the article specifies the 

 material analyzed. This is particularly true of irons, steels, ferro- 

 manganese, and spiegeleisen. 



We desire to express our obligation to Dr. H. C. Bolton for the per- 

 mission to make use of his "Index," as well as for assistance in the 

 examination of a file of journals, and to Mr. A. C. Davis for his valu- 

 able assistance in the examination of proof-sheets. 



This compilation was made possible by a ready access to the 

 valuable libraries of the Massachusetts Institute of Technology, 

 notably the William Ripley Nichols Chemical Library, but we also 

 wish to express our appreciation of the courtesies extended to us by 

 the Boston Public Library, the Library of the American Academy of 

 Arts and Sciences, the Boston Society of Natural History, the Surgeon- 

 General's Office at Washington, the Library of Congress, the libraries 

 of Yale, Columbia, Lehigh, and Harvard Universities, the Massachu- 

 setts College of Pharmacy, and the John Crerar and Astor Libraries. 

 Professor James Lewis Howe's excellent "Bibliography of the Plati- 

 num Metals" has served as a model for the arrangement of our data. 



Henry P. Talbot. 



John W. Brown. 

 Massachusetts Institute of Technology, 



Boston 

 January, 1902. 



