PREFACE. 



In 1875 Dr. H. Carrington Bolton published an " Index to the Lit- 

 erature of Manganese, 1 596-1874, " comprising the references to the 

 entire available journal literature relating to manganese and its com- 

 pounds which had appeared before the latter date. The general plan 

 of his index did not, however, provide for the separate classification of 

 the articles containing analytical data, and as the journal literature 

 since 1874 has increased so enormously in volume as to render the 

 search for such data very laborious, it was deemed worth while to 

 compile a separate bibliography bearing upon the qualitative detec- 

 tion and quantitative separation and determination of manganese, for 

 the use of analytical chemists. For this purpose Dr. Bolton's work 

 has been reviewed almost from its beginning, and while we are in part 

 indebted to his "Index" for the references from 1785 to about 1830 

 (having received his permission to make use of them), yet a num- 

 ber of these early journals were independently examined by us as 

 indicated in our list. From 1830 the compilation is practically inde- 

 pendent, although we desire to express our obligation to the Bolton 

 " Index" for the opportunity afforded for the verification of a portion 

 of our work. All the originals of the references have been examined 

 except those marked with an asterisk. 



The compilation of material for this Bibliography was practically 

 completed when the "Bibliography of Steel- Works Analysis," pub- 

 lished by Brearley in the Chemical News, 1899, came to our attention. 

 We are indebted to this Bibliography for an opportunity to verify a 

 portion of our later references and for some four or five references 

 which we had omitted. 



The abbreviations used in this Bibliography are those recom- 

 mended by the Committee on Indexing Chemical Literature of the 

 American Association for the Advancement of Science. The oi-iginal 

 reference is placed first, and, in general, articles corresponding to 

 references which follow those to the Chemisches Centralblatt or the 

 Jahresbericht der Chemie are decidedly briefer than the original 

 papers. It has not been practicable, however, to rigidly maintain 

 this distinction. 



